Having unprotected sex (raw, not wearing a condom).
Also called Bareback

(noun) A successful type of theft which results in an acceptable, impressive and rewarding payday for the protagonist.

Mostly a term used by gay men to describe unprotected sex between to men having anal sex. No condom other words. Occasionally used heteros as well but not often.

A person with massive hair-growth on his (in some instances, her) back. Homonymous with "bareback"

The act of two or more hairy men (bears and or otters), having raw or bareback sex.

bear back is railing a guy or girl from the back while you are scratching their back to make the bear back.