1. When a woman loses control of her bowels during orgasm while having sexual intercourse. Also known as 'fucking the shit' out of someone.

2. While performing anal intercourse, the receiver loses control of their bowel.
I had a big mess to clean up last night after I sexlaxed Suzy.
by filthypiratehooker December 19, 2010
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Refers to medication taken before intense sexual encounters. Similar to ex-lax but rather than feces being expelled it educes the excretion of all sexual fluids from users.
Billy Mays yelled, "Sexlax is so powerful it causes penile explosions even when user is suffering a rotten case of whisky dick!"*

*May cause strokes
by Vince "From Sham-WOW" March 3, 2009
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The urgent need to deficate immediately after you fornicate.
In the locker room before practice Dan told his teammates, "I was hit with sexlax after shagging Suzy last Friday night. It happened so fast I pulled over and dropped serious mud in the DQ parking lot!".
by Commode Turtle May 19, 2022
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