Some dietary supplement tend to make the taker excrete their own body fat in liquid form (Britney Spears was rumoured to be a fan). However, unlike spears these fluids can be used for the sole purpose of lubrication of the rectum. Perfroming a Sloppy Jack would be to take advantage of these fluids in the pursuit of back door pleasures
by ManMachine January 24, 2005
When a semi-flaccid penis is flung violently in a whip-like motion towards a women's face or genitals, usually causing semen to become airborne.
"How did your date with Brenda go last night?"
"It was nice, we went to dinner and afterwards I gave her a big fat Sloppy Jack. There was semen everywhere."
"It was nice, we went to dinner and afterwards I gave her a big fat Sloppy Jack. There was semen everywhere."
by cannabis420 March 18, 2015