This is why God invented voice mail, dummy.

. . . hey, if you're trying to get it on with someone who's not your girlfriend and your girlfriend calls/stops by, I can't say that I'd sympathize with much.

update:  If you're the girlfriend and you know what your guy is doing, here's a nice one to get some light revenge:  

*beep* "Hey, it's me . . . listen, we gotta talk . . . the test . . . it came back positive.  Call me."  *beep*

"Bob, you forgot to meet me behind the blowing alley REMEMBER!  If you get this call, please call me back ASAP okay bye".

I have to come clean here. . .back in my lawless college days, if a girlfriend was coming 'over' I would turn off the ringer and quietly shut off the answering machine. . .no way was I going to allow an awkward phone call to kill my chances. (My wife is reading over my shoulder and now twisting my ear. . .oww!)

If you're dumb enough to cheat on your girlfriend beside your AUDIBLE answering machine, you don't deserve to get laid. You know she's gonna call as soon as panties hit ankles, UNPLUG IT, or don't try it, NEAR IT! Of course I can't talk........coming from the guy who cried the sister's name. AHHHHHHHHHHHHHHHH! Blushing again.

Former girlfriend called, and I answered. When I was with my current girlfriend. Towards the end of the night. In an elevator where she and everyone else could hear both ends of the conversation. This one killed me. Sometimes I look back and say dude what exactly were you thinking right then.

This is why an answering machine sucks. Voicemail is good.