meaning: many people in an area all having sex. such as an orgy
that party was a sextravaganza!
I was really retarded, so i thought a sextravaganza sounded like a great idea, then i got aids.
:how was your day?
-:man, it was a sextravaganza!
A celebration of sexual congress lasting at least two days. Primary festivities include sex, oral sex, hand jobs, and grinding (although this is far from a complete list).
Man, I got like 9 bitches coming down to the beach house for spring break. It's gonna be a god damn sextravaganza!