yk what would be funny? a lost boys au where there really were no vampires in santa carla and the frog brothers + sam lowk just wreak havoc. it would be like in saiki k where kaidou would blame every misfortune to come his way on "the dark reunion".
i could imagine "the lost boys" entertaining the frog brothers + sam in order to make michael happy. for example, human david pretending to sleep upside down on the staircase railway of the emerson house trying to tease sam, and in doing so flirting w michael, but inadvertently falling over when the frogs run near him as they conveniently hold a crucifix.
or as "the lost boys" and michael bike around coronado bluff, marko falls off his bike chipping two of his teeth resulting in fang-like canines and getting concussed (where his headache can only be relieved in a dimly- lit area). the next time sam and the frog brothers see marko, dark circles form under his eyes and he winces as the lights turn on- revealing his chipped teeth.
maybe in this reality everyone would have lived happily ever after, but idk!