Surfboard

When a guy cums by gliding his dick along a butt crack, usually the bottom is laying face down and he is lying on top, no insertion, just an external prone bone between butt cheeks. Works for both straight and gay sex.
Surfboarding is girls at the spa is the safest and most soul satisfying way to cum.
by Louderbang June 12, 2024
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rusty surfboard

1. When a surfer has the runs/explosive diarrhea and is waiting for the next set (of waves) too far from the beach to make it to a bathroom and "let's it go" while sitting on his or her board

2. A sex act where two wangs or sex toys are simultaneously inserted into a butt at angles so they come together in a point past the sphincter and the two wieners or dildos outline the shape of the front of a surfboard
Brodie was super embarrassed when he went back out too soon after eating Indian food and ended up with a rusty (surf)board.

I heard you and your buddy ran a rusty surfboard on your girl the other day. She must be super chill.
by DerHoffMan April 10, 2016
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Surfboard Sue

She’s a surfboard sue
Expression been around since 1960s in Australia
by BittemYum December 17, 2019
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Amish Surfboarding

Titty fucking your flat-chested second cousin

Also known as “Riding an Amish Surfboard
Dude, Elijah was Amish Surfboarding at his family reunion last weekend.
by Buford Turnipseed June 27, 2019
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Dirty Surfboard

When you are at a party/large gathering, and you have to drop a poopie, so you proceed to turn on the bathtub/shower at said party, and proceed to take large poopie/poopies in the tub. Wait a few hours for the bathroom to flood, and vuala! A dirty surfboard!
"Yo bro I just rode the waves on that dirty surfboard you made in the bathroom. You pooed a fat one out."
by JuicyJoints6969 April 18, 2017
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