When getting a blowjob, your partner fondles your nut sac and you simultaneously release a fart and scream FREEDOM (like Mel Gibson in Braveheart).

similar to Dirty bagpipes.

While she was sucking my dick I gave her a dirty wallace and woke up her roommate.
by Matt & Dan November 24, 2006
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When you’re having sex with a woman and she fingers your ass which then causes you to explosively eject shit all over her face.
I can’t believe my girlfriend gave me a Dirty Wallace.”
by OsWldio September 6, 2023
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