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).
3. An exceptionally complex setup made for the purposes of having sex.
1. "That chick is so hot, she's sextravagant."
2. "Last night was sextravagant, babe."
3. "When I entered the room, I saw that he had lit candles, put on some really good mood music, and scattered real rose petalseverywhere! It was so beautiful and sextravagant!"