Movie: Not Another Teen Movie (2001)
In the popular 1999 teen drama flick Cruel Intentions, there's a tame but still rather hot kissing scene between attractive stars Sarah Michelle Gellar and Selma Blair. The former is sexually promiscuous and very experienced, while the latter is prudish, timid, yet looking to expand her horizons, so to speak. And their tongue-wrestling bout is quite titillating.
In the teen-movie-spoofing film Not Another Teen Movie, there's a similar moment shared between gorgeous, young actress Mia Kirshner (taking Gellar's position) and the elderly but game Beverly Polcyn (imitating Blair's naiveté). It's not hot—rather, it's pretty damn gross. Fortunately, it's also damn funny, extending Kirshner's intimacy with Polcyn by connecting their mouths with the longest strand of saliva imaginable.