I'm going in - A phrase you never say to your mom because she’ll just laugh

A phrase you never say to your mom because she’ll just laugh and ask if you’re getting a tattoo or eating a whole cake.

I'm going in, mom? I just ate a whole cake and I’m still hungry.

I'm going in, mom? I think I just proposed to my cereal.

I'm going in, mom? I’m gonna be famous or die trying.