Been busted a number of times!
1st time was in the basement recroom of my GF's house back in high school... Her father came home early unexpectedly! We had to jump up slip on shirts real fast and jump on the couch with a blanket over our laps to make it look as if we were just watching TV (which we had left on to disguise the "noises"... We were 17 - 18 at the time. I think he suspected something was up, but he didn't press the issue, so we got real lucky! (He also really liked me, so I think he was cutting us some slack... ;-) ) We also got busted by her older brother a bunch of times...
The next time I got "busted" was when I was living with a room-mate in a 2 bedroom apartment in Hamilton. I thought my room mate had left for a trade show real early in the morning and my GF at the time (not the future Mrs. CG) had slept over that night. I woke up and walked into the kitchen (naked) to make some coffee... then went back to my GF in bed while the coffee was brewing (leaving the bedroom door open). We had sex, and she was rather "vocal"... much more so than the night before since she knew the room mate had left... When we were done, she gave me a kiss and ran out to the kitchen to get her coffee (again- buck naked...) All of a sudden I hear a scream and then some voices! You guessed it... the room mate was home the whole time! Turns out the trade show was the following weekend! (Side note: I'm still buddies with this guy- in fact he is the god father to our children and every so often he thanks me for helping him have a great "show"... The GF was quite a BABE back then! ;-)
Fast forward a bunch of years.... to 2007, Mrs. CG had one of her GF's over... the kids had all gone to bed, and she and the GF had a little something special planned for me for my birthday... They said wait downstairs for a bit, and when I hear the shower start to come upstairs Hmmm I thought... OK! In about 5 minutes I heard the shower start in the master ensuite so I venture upstairs to see what they had planned! They were having a super sexy soapy shower together! I joined them of course but that was a little tight for space since it was just a regular size tub shower so we soon dried off and went to bed! The ladies were getting a little vocal and my son (who was 14 yrs old at the time) started banging on the adjoining wall and yelled "Hey, I know you guys are havin a 3-way, but do you wanna keep it down in there?" OMG! (Side note: We explained to him the next day that he must have been hearing the television and that Mommy's GF had left soon after he went to bed... I think he bought it, cus he hasn't brought it up since! But he does still occasionally bang on the wall occasionally when Mrs. CG gets a little too vocal though...)
So far... we haven't been busted by either of our daughters, but we have a lock on our bedroom door, just in case!
Another side note... I think Mrs. CG is developing a bit of a voyeurism streak... She got up and danced on the stripper pole at the X-Club last weekend and flashed the entire dance floor a number of times and has decided that we should leave the curtains open on hotel rooms lately! LOL!