When the Marvel logo shows up on TV, but the new Fantastic 4 movie comes on.

When you perform cunnilingus on a woman under the bedsheets and, subsequent to orgasm, proceed to fart, thus creating a Dutch oven effect. Thus the sweet part (cumming) and the sour (the rancid smell of the fart.)

The act when putting sweet sour sauce on some bitches pussy and licking or sucking it off her pussy.

When two guys lay next to each other and a woman uses their hard cocks like chopsticks to eat Chinese food.

(N.) Describes the act of eating a main course and dessert simultaneously, rather than the traditional main course first, and dessert second

sweet (often used in place of the word sweet, not like in sweet like sugar, but when something cool happens)

While your girl is giving you a blowjob she gives you an uppercut to the balls.