when a guy is laying on a bed with his erect penis up and she jumps of a diving board and lands on him with her legs spread apart and his penis goes inside her vagina.
yo jerry, my girlfriend gave me the best light post ever.
jerry: thats lit dude!
by Abd al Alim January 08, 2018
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When a guy is about to nut and you can see the cum at the tip.
Jim: "I as fucking your mom last night and she told me I had a nice light post."
Me: "Same."
by Jpm26 February 19, 2016
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