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2.
When a guy cums in a girls ass and she then stands above him and squeezes the jizz out of her ass onto the guys head.
My girl gave me a Dirty Seagull at the beach the other day.
by BobbyFresh3 October 10, 2011
 
1.
When you're fucking a girl on the beach, you pull your dick out, dip it in the sand, and stick it back in the girl.
I gave that bitch with the fat ass a dirty seagull the other day.
by MRP January 05, 2004