look up any word, like cleveland steamer:
 
1.
adj. Looking naturally and unconciously sexy, almost as if it were by accident
Wow, Tasha looks so sexidental today. I wonder how she can just wake up and look that great without doing anything.
by Brooklyn Smit November 06, 2009
 
2.
adj. Accidental or un-premeditated sex that may or may not be induced by alcoholic beverages.

Sexident: n. The occurrence of accidental sex that may or may not be induced by alcoholic beverages.
"yea.. uhh, sorry Jane, but last night was just sexidental, my bad."
by medusa285 November 24, 2011