Strange Days at Blake Holsey High (2002)

S1E5 Lifetime

Lucas, a brilliant but quirky student, endures constant bullying for his eccentric ways. After a bizarre mayfly bite grants his wish to be an adult, he initially revels in the novelty. However, he soon discovers he's aging at an alarming rate, mirroring the insect's fleeting lifespan. Racing against time, Lucas must find a way to reverse the process and reclaim his youth before it's permanently lost.