B8 in this context is a gay/homosexual slang term and abbreviation for the word 'Masturbate'. Often used in an online profile or advertisement to signal the desire to masturbate with someone else or as a group.

frot is another gay/homosexual term for rubbing two penises together.

In this definition 'B8 and frot' represent two or more people masturbating in a close proximity to each other and touching each other's penises as they masturbate.
I posted a Grindr profile as B8 and frot so I could find other guys to beat off with while we rub our cocks together.
by Wepapersack August 16, 2019
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