One of my favorite Tumblrs—next to Sports Balls Replaced With Cats, of course—is this one where Mike Rosenthal draws people's silliest, funniest, downright weirdest tweets.
The tweets themselves are pretty great, but Rosenthal really emphasizes how uniquely strange and funny they are through his drawings and (sometimes) animated pictures.
There are even a few video game themed ones out there, these few being the recent highlights.