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.
by heatxsink April 22, 2012
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A small house that feeds birds. Put one in your soul
Make a little birdhouse in your soul...
by Keegster April 25, 2003
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1. To have an inside joke or share a secret with one or more people

2. To be in league with one or more people trying to accomplish a collective goal
John: Dude we should start a trend by getting everyone to start saying cuntbag.

Josh: Sweet! Great idea!
John: Hop in my birdhouse!
by MayorMcCheese118 November 29, 2012
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When a girl sits on a guy's face while checking Twitter on her phone.
Guy: What's that tweeting sound I hear?
Girl: STFU and mack my box! I'm in the Birdhouse looking at twit pics of Lena Dunham's dog.
by salsaconqueso December 1, 2015
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Kick ass skateboard makers/sponsers
Dude 1: Dude that birdhouse board you scored is sweet!
Dude 2: I know man, I'm such a hardcore nugget.
Dude 1: Werd \m/
by MsNugget March 26, 2005
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The third story of a blue house on oakland street where an occupant named matt resides. The birdhouse has been known to keep matt inside for several days at a time.
Adam: "where is matt?, i haven't seen him in like 4 days"

Wyatt: "I think he is in the birdhouse"
by abby (the dog) February 3, 2006
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a sexual act where the mn shoves both of his feet up his own anus and the female chews his genitals.
elroy is the best at the rolling birdhouse
by assBlood March 13, 2015
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