Just happened to me.
So i go and spend time at my girlfriends college with her sometimes. I'll usually come one day, spend the night, and go home the next. She has a roommate who is also a girl. Last night i was trying to get my girlfriend (her names Megan) to give me some head. I'm sitting in this chair on the ground and there's a bookcase between Megan's half of the room and her roommates half. Well, being the dumb ass that I am, I didn't check to make sure her roommate was gone. I pull Megan over to me and start making out with her and stuff. A couple minutes into this, I blurt out "I want you to stick your dick in my mouth" obviously meaning to say "i want you to put my dick in your mouth." Megan kinda smiled at me, but just then I heard a snicker.
Her roommate and a friend were in the room on the computer and they both heard me say that and now I have to sleep here for another night.
Pretty fucking lame