Sex Munchies 

Just like the munchies you get from being high, this is getting very hungry after having some really good sex.

This mostly happens to guys after a good fucking session. This ensures you sleep well- satisfied x 2 !

Late at night:
"Are there some sandwiches still left in the fridge baby?*
"Yea I gat the Sex Munchies too John, get me some as well."

Sex Munchies by Ntee September 7, 2013

Sex Munchies 

The appetite worked up from having rough, energy-consuming sex.

Damn, you fucked me so hard, I got the sex munchies now.

Or
Okay now that we're done having sex, I'm starving. I totally have the sex munchies.

Sex Munchies by Jmtmnt March 3, 2015

Post-Sex Munchies 

Munchies that you get after having sex, instead of after smoking pot.
One usually goes for high carb snacks, as to replenish after using them all up during intercourse.

Joe: do you have any chips or something?
Jane:Why, we just had sex like 5 minutes ago?
Joe: I have Post-Sex Munchies, I'm starved!

Post-Sex Munchies by EMT-chick09 July 19, 2011

Sexunchies 

The massive food cravings experienced after a good smoosh (sex) session. Similar to the sensation one endures following a marijuana high, but without the drug-induced euphoria.

(Just finished having sex) "Ohh man...." "I've got the sexunchies." Or, when referring to someone familiar with the term, simply "Sexunchies."

Sexunchies by Cowahbella December 7, 2012