Between all of the shared spaces, landlord troubles and stair-climbing, apartment living can be tough -- but neighbor sounds may be the toughest thing of all.

More specifically, neighbor sex sounds.

Do you call? Do you knock on their door?

Redditor Phalanxo came up with a solution that may just solve the problem once and for all.

PICTURES:

Via Buzzfeed

Also on HuffPost:

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  • Ouch, My Privets!

    The "Be a good boy" star takes the cake. (Via <a href="http://www.passiveaggressivenotes.com/2010/03/29/the-passive-aggressive-wunderkind/">Passive Aggressive Notes</a>)

  • Gwockomoly

    But big props for spelling "beautiful" correctly. (Via <a href="http://stuffkidswrite.com/2011/11/25/holy-gwockomoly-this-birthday-card-is-be-a-utiful/" target="_hplink">Stuff Kids Write</a>)

  • Not One Peace Of Baken

    Into healthy eating at a young age. (Via <a href="http://theberry.com/2010/09/15/when-kids-write-notes-they-mean-business-24-photos/" target="_hplink">The Berry</a>)

  • Advice For Cain And Abel

    Different strokes for different folks, Larry. (Via <a href="http://www.guy-sports.com">Guy Sports</a>)

  • Father's Day Thangs

    A lot of fun tangs. (Via <a href="http://stuffkidswrite.com/2011/06/21/aint-nothin-but-a-dad-thang-baby/" target="_hplink">Stuff Kids Write</a>)

  • Nice Going Chloe

    THANKS A LOT!!!!!!!! (Via <a href="http://theberry.com/2010/09/15/when-kids-write-notes-they-mean-business-24-photos/" target="_hplink">The Berry</a>)

  • Sisters Get No Love

    As long as she loves her Grapma AND her Gradma. (Via <a href="http://www.passiveaggressivenotes.com/2010/07/08/sibling-rivalry-the-rift-that-keeps-on-giving/">Passive Aggressive Notes</a>)

  • True Love

    More than anything in the world and as much as cake. (Via <a href="http://theberry.com/2010/09/15/when-kids-write-notes-they-mean-business-24-photos/" target="_hplink">The Berry</a>)

  • Cutest Apology Note Ever?

    If only all criminals were this polite. (Via <a href="http://catbirdnyc.blogspot.com/2010/06/little-thief.html">CatBird NYC</a>)

  • Honesty Isn't Always The Best Policy

    But she makes up for it with 7 exclamations points. (Via <a href="http://www.passiveaggressivenotes.com/2010/03/29/the-passive-aggressive-wunderkind/">Passive Aggressive Notes</a>)

  • Big Mess

    Katie's mom's on her own for this one. (Via <a href="http://theberry.com/2010/09/15/when-kids-write-notes-they-mean-business-24-photos/" target="_hplink">The Berry</a>)

  • At Least She Compliments Their Blowjob Skills

    Really it's the father, not Susan, who deserves a talking-to from the teacher. (Via <a href="http://failblog.files.wordpress.com/2010/01/129084318758689215.jpg">Fail Blog</a>)

  • No Burning Of The Feelings, Please

    It's kind of threatening, but then there are those pretty drawings. We're getting mixed signals. (Via <a href="http://www.passiveaggressivenotes.com/2010/04/26/you-burned-my-feelings/">Passive Aggressive Notes</a>)

  • Marriage Proposal

    It should be this easy. (Via <a href="http://stuffkidswrite.com/2011/09/22/marriage-proposal/" target="_hplink">Stuff Kids Write</a>)

  • Nice Sign-Off

    Why, Luke? Why? (Via <a href="http://theberry.com/2010/09/15/when-kids-write-notes-they-mean-business-24-photos/" target="_hplink">The Berry</a>)

  • Aww... HEY WAIT A SECOND!

    It's the holidays, give us a break! (Via <a href="http://totsandcrafts.cheezburger.com/2010/06/11/funny-kids-drawings-and-you-are-fat/">Tots And Crafts</a>)

  • Anything But Jennifer

    What-A-Cute-But-Strange-Letter! (Via <a href="http://blog.kylehemingway.com">Kyle Hemingway</a>)

  • Good Teacher

    All the wonderful traits of a good teacher. (Via <a href="http://theberry.com/2010/09/15/when-kids-write-notes-they-mean-business-24-photos/" target="_hplink">The Berry</a>)

  • Camp From Hell?

    We wouldn't call anyone with a rash on their P-nus a happy camper. (Via <a href="http://www.boingboing.net/2010/07/02/funny-book-ps-i-hate.html">BoingBoing</a>)

  • Reindeer Protection

    Be nice to your reindeer, Santa. (Via <a href="http://theberry.com/2010/09/15/when-kids-write-notes-they-mean-business-24-photos/" target="_hplink">The Berry</a>)

  • A Letter To Obama

    Don't worry about Area 51, Obama. We'll take care of it! (Via <a href="http://www.schoollibraryjournal.com">School Library Journal</a>)

  • Elbow Licking

    With a friend though. (Via <a href="http://stuffkidswrite.com/2011/05/16/does-elbow-licking-count-as-spending-time-wisely/" target="_hplink">Stuff Kids Write</a>)

  • Tooth Fairy

    Plees? (Via <a href="http://theberry.com/2010/09/15/when-kids-write-notes-they-mean-business-24-photos/" target="_hplink">The Berry</a>)

  • A Detailed Escape Plan

    How polite of her to warn her parents! Somehow we think she didn't pull it off. (Via <a href="http://www.passiveaggressivenotes.com/2010/05/17/from-the-mixed-up-files-of-joan-jett/">Passive Aggressive Notes</a>)

  • The Boss

    Mom's the boss, kid. (Via <a href="http://stuffkidswrite.com/2011/09/08/mom-is-not-your-boss/" target="_hplink">Stuff Kids Write</a>)