When you are smashing at the beach and your dick slips out of her pussy and hits the sand. The sand sticks on your penis and you proceed to have sex.
I was smashing last night and gave her a Fun Dip.
by Add Assistant October 17, 2018
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When you stick 3/4 of your pinky finger into another person's ass crack.
Hey Matt, want to come over to my house and try some Fractional Fun Dip with Joey and me?
by Tonweeweeweeweewee December 28, 2016
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