A rule used by school fuckboys explaining how you can leave a classroom if the teacher doesn't show up in 15 minutes. The rule is obviously untrue.
Fuckboy: Hey guys, have you heard of the 15 Minute Rule?
Everyone else: No.
Fuckboy: You know, if the teacher doesn't show up in 15 minutes we can leave the classroom.
*INCREDIBLY LOUD SIGHING*
Much like the Freshman 15 when a student starts college he gains 15 pounds, the Covid 15 is when people start to gain weight due to inactivity during the Coronavirus pandemic.
The gym has been closed for so long I think I gained the Covid 15.