The act of taking a shit on someones chest before during or after sex (can be used as a punishment, break up tactic or fetish act) Very similar to the Cleveland Steamer, but with the Boston Steamer, you also tea bag her with you nut-sack while taking the shit.

lil mad is like big mad but the opposite, you mad but not mad to the extent of pullin somthin

The true boston steamer is a sexual act (fetish). It is when one person craps on another person's face and then sits down and rocks back and forth like a steam roller.

The act of ending a relationship by depositing a steaming pile of feces on the back of a sleeping lover after a night of passion followed by a hasty departure.

A Boston Steamer is 70's term named for a certain 1970's celebrity that liked getting his dick sucked while he took a shit. Hence, a blowjob while your shitting is called a Boston steamer.

Leaving a steamy pile of shit on top of a glass table while somebody is laying under the table face up.

to grab someone by the neck and drag them out into the snow outside and the open there mouth and crap in it.