I've never heard anyone having sex, though I've heard people discuss whether they should.
I've actually been the perpetrator
One of my mates needed a place to stay one night, so he stayed on my boyfriend's couch (in his room) that night. Being the horny bastard I am - I woke up in the morning extremely randy, noticed my mate was awake, but mouthed a 'good morning' and using hang signs asked him to turn around and go back to sleep.
I then proceeded to have sex with my boyfriend
Alcar...