We got a free pack of word magnets with our supply order today so I've been leaving cryptic insults on random magnetized surfaces for my co-workers to find...
This one says "go eat glue you candy vacuum" (I can say that because I am a candy vacuum)
Every time someone reads them out loud I die laughing. Nobody believes that it wasn't me who put them up. I live for this kind of shit though, for real XD