@spingebill47577@SaphyChaos@Nuc004 it might be a pun on 10代 (teenage) and 重大 (important) being homophones (じゅうだい juudai).
so the お肉の10代なんだよ line literally means “im in the meat teens after all” but it sounds the same as お肉の重大なんだよ “meat is important after all”