Definitions by ThefirstGAL

Goose knees 

when a girl(esp. skinny chicks) gives so much head on her knees that her knees begin to swell and resemble those of a goose or duck.

“I’m chillin at the crib sipping juice, while this bowlegged bitch gets goose knees.”
-Anonymous

Goose knees by ThefirstGAL May 8, 2014