Sex Swagger
This occurs when a housemate or sibling (normally a male) has just had sex that you have probably overheard, and he does the "Sex Swagger" outside your room and down the hall to the bathroom. By the way he swaggers slightly you can hear his smugness and self-congratulations echo in his footsteps, as well as a possible stagger due to the darkness of the hallway.
I was just dropping off to sleep last night when I heard Dylan and his girlfriend going at it, and of course soon after Dyl doing the sex swagger. What a git.

DUDE! Stop the sex swagger and shut the fuck up!!