an activity in san francisco where a group of drunken males (gaysians) run around pulling the fire alarms inside the red bird houses found almost on every street corner.
We went birdhousing last night and it was fucking crazy, we had to hide in an alley as the fire truck drove by.
Dude we can't go around birdhousing anymore we're gonna get arrested.
when you have a caffenated drink or or snack in your mouth then you make-out with someone who has done the same. idea comes from how birds feed there young.
dude, i was just chilling there with my redbull and then out of no where this chick just fucking tongues me while she had mt dew in her mouth. love birdsex