I made that mistake a few times, thankfully the messages were benign so no harm done. Lots of potential for headaches there though. So I triple check the sendee before texting or IM'ing now!

Me: 60 w/ S18, D24, D27

M: 21 years; BD: 06-14-12; S: 09-10-12; D final: 03-17-14; XW:57