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(Noun) - A highly appealing abdominal region on a woman that causes an extremely strong desire in a man on which to ejaculate sperm.

It is not uncommon during intercourse that a man may achieve orgasm while in the missionary position. If he removes himself from the woman just prior to ejaculation, a frequent and convenient zone of fluid deposit is her abdominal area. A heightened level of satisfaction from performing this act can be attained by the woman having toned abdominal muscles, or at least having the appearance of such. Thus, the woman has a great stomach to cum on, or a "cumach".
Susie has been doing a lot of sit-ups. She has a total cumach now.
Cumach by Captain Inches January 29, 2010
Related Words

chumchumeriono 

Your bestest friend taken from the word chummy made up by maddie
Love ya chumchumeriono

chubachaing 

Means to go down on a girl in a fast motion. Also known as eat out or muff diving.eat outMuff diving
I was chubachaing that pussy all night.
chubachaing by puterfreaksteveo February 4, 2005

Chupachabra 

Fuck, Shit, Pinga, Cajone, Bitch, Dick, Puta, Damn, anything bad, malo. The modern bad word that is not really a bad word. You can say in and around schools, court, kids, police officer, judges, family, friends, mom, dad even the president without getting in trouble!
1- Chupachabra!!! Why did you just hit your sister!

2- Add it in conjunction to a bad word like "You fucking chupachabra! get your tongue out of my girls throat!" and make it really bad.
3- Holy fucking chupa-fucking-chabra! did you just see that?
Chupachabra by federici December 8, 2014

Chumchumerino 

A name for a best friend, taken from the word chummy and sprinklerino!
I love my chumchumerino
Chumchumerino by Rusty133 April 19, 2015

ChupaChuphilia 

Addiction to ChupaChups or anything loliipop-like.
Some guys in anime have Chupachuphilia.
ChupaChuphilia by ChupaChuphile January 2, 2009