I've been messing with my coworkers all. damn. day. 

That said, I should give you this WARNING: while this service is awesome, and totally anonymous (not asking for ANY info to use the service), be careful with your sentence structure.

You know what I'm saying? If it's someone you talk to on a regular, or even have regular email correspondence with, it's going to be a whole lot easier for them to suspect that these messages are coming from you!

Understand?  Good.  Now have fun! (and you're welcome)