One character latches onto another’s nipple and sucks or mouths it like foreplay, often mixing in licking, teasing bites, and wet tongue work. The art tends to linger on close-ups of lips sealed around a hard nub, with hands squeezing tits and the other person reacting with arched backs, moans, and horny, needy expressions. It commonly shows up before fucking or during sex as a way to keep someone worked up while the rest of their body gets played with.