It can be kind of hit or miss, but
yeepee or
#yeepee on Twitter turns up some stuff, particularly if you search during or immediately after Friday and Saturday nights.
In case anyone didn't know the backstory on that meme, Angela Yee is a radio DJ in NYC who is pretty unapologetic about peeing in public. It's kind of a running gag with her, and she's even done it on camera a few times.
This is the photo that is most common.
