clown boxing 

showing off in front of the mirror when no one is home: flexing, showing cleavage, making pouty lip faces, dancing to boy george naked.

I do my best clown boxing drinking martinis while on house arrest.

clown boxing by Cootie August 24, 2006

boxing the clown 

Jerkin off

What? so you're gonna sit at home boxing the clown all night?

boxing the clown by muthafuckinhol January 11, 2010

boxing the clown 

to masturbate, to jack off, to rub one out

my mom caught me "boxing the clown"!

boxing the clown by M.Kelly January 5, 2007

boxing the clown 

The act or art of manual stimulation of your own, not another's, hang-down.

I sat at home last night with the Sears catalog, boxing the clown till I was raw.

boxing the clown by Tunis August 27, 2003