When the girl riding you on top and you wrap your legs around her chest and plunge in deep enough you can do a sit up and lift yourself up forming the bottom of an anchor.
Dude 1: "My abs are killing me."
Dude 2: "Bro you never workout."
Dude 1: "I went anchor deep on this chick last night."
Dude 2: "Nice."
by Thuncar August 24, 2010
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