"is it annoying when my shnoz rubs against your backboard during fellatio?  "my balls look fine, but i think you bruised my backboard
the upwards-facing flat plane of the penile shaft, when in boner form
""is it annoying when my shnoz rubs against your backboard during fellatio?  "my balls look fine, but i think you bruised my backboard" What is the definition of "backboard"?