High school au where Vincent starts bullying Alastor and pushes him around (wedgies, ball taps, wet willies, etc) mainly cause of misplaced underlying feelings of attraction. And Alastor finds out this way that being dominated and degraded turns him on (he absolutely hates this fact). Eventually, Vincent notices. Which leads to either: Them finding out that they both are so turned on by their sub/dom dynamics or Vincent gets so flustered by Alastor’s arousal that Al turns the tables and makes Vincent do everything he just did to him to himself in order to earn a chance with Al.