oh really? even the song called "you're mine" by DAgames? (to those who are reading this comment, don't actually go to the song as it contains cursed lyrics)
though to be fair, i have listened to dead bart vs red mist squidward by epic rap battles of cartoons, eyeless jack vs laughing jack by epic rap battles parody, and M A R I O vs sonic.exe 2 by epic rap battles of creepypasta when i was young and those 3 involve some sort of swearing