When the tissue in your boob, gets really tense, and forms a ball sack, from having sex. This tallow brings great pain though out your hole body.
*Jason and Jancarlo having sex*

Jason: Ow, my tallow!

Jancarlo: I'll get the cream o.O
by Tallowgirl123 October 26, 2010
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Using the fat rolls of an extremely obese person to masturbate, preferably using lard as lubricant
I took a ride on the magic tallow last night.
by conman2305 January 23, 2016
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