This week on Twitter, parents shared stories of kids who are mastering the art of manipulation. One mom's 6-year-old claimed to be "kissing" a marker, not eating it. A 4-year-old hid his father's keys, then offered to "find" them for $5. But sometimes, when a child's math doesn't add up, negotiations work in the parent's favor. Heather Spohr tweeted, "Me to my kid: You can play for five more minutes, then it's time for bed. Her: How about…two minutes! Me: Sounds GREAT."

Our favorite tweets this week ranged from political to laugh-out-loud funny. Click through the gallery below to read them all (note the special appearance from Big Bird) -- and vote for your favorites!

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