There's a reason proofreading exists.
And apparently, its pitfalls are all too real for this guy, whose diploma from the University of California-Berkeley hung on his wall for six years before he noticed a rather unfortunate typo. Or at least, six years before he finally posted it to reddit for all of us to enjoy.
"It has been hanging on our wall like that for years and my wife noticed it when we were packing to move," the redditor who posted the photo wrote.
The opportunities for (dirty) puns here are endless, so we'll leave those up to you -- but we definitely didn't know there was a degree in that particular field.
[h/t Total Frat Move]