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1.
The excuse you give to go fuck.
While visiting my parents, Jeff and I usually use the sexcuse of needing a gallon of milk from the grocery store. That gets us out of the house long enough for a quicky in the backseat of the car.
by Kate Charlton September 03, 2008
 
2.
An excuse a woman makes to avoid having sex.
the womans sexcuse was "I have a headache, so we can't have sex tonight."
by Dhabi February 02, 2007
 
3.
The excuse one may give for having sex with someone that he or she may not normally do so with. Can be given on holidays, birthdays, times of low self-esteem or frunkedness, or when there is a general L.O.S.

Not to be confused with Holiday Sex, where sex is expected but has to be worked for. However, ex sex and drought busters includes times when a sexcuse would be given.
Dude 1: Hey man, what're you up to?
Dude 2: I think I'm gonna go bang out my ex.

Dude 1: Dude, you said you would never touch that ass again.
Dude 2: I need a Drought Buster bad man.

Dude 1: Terrible sexcuse dude.
by ckolek February 14, 2011
 
4.
When someone makes bad excuses to come over and hook up
"you're just making sexcuses to come over"
by koolaide guy April 13, 2010
 
5.
excuses females make to get out of having sex or any kind of four play
this is one of the most commonly used sexcuses "im on my period and i have lock jaw so i cant give you head"
by kam314 December 26, 2009
 
6.
Using your gender to validate stupid decisions, even though these actions aren't valid at all.
My only sexcuse is that I want to act as crazy as I want and eat anything I want this week. (For girls)

My only sexcuse is that I want to have intercourse with as many girls as I can before I lose my hair. (For guys)
by bauerboo March 20, 2014
 
7.
An excuse for having sex with someone you should not have had sex with. Usually a bad, quickly made up lie.
John: "How could you cheat on me with Derek!'
Mary's sexcuse: "...I fell on his dick?"
by hey-j February 20, 2012