Making fun of the way a person eats a banana, in a sexual way. Usually they broke banana eating rules.
Refer to the banana eating rules
1. Never close your eyes
2. Never make eye contact
3. Fast bites, Can't have that banana more than 1 second in your mouth
4. Small Bites, can't take bites of more than 4cm
Archie: Betty totally gobbled that banana, she took 1/2 of it in her mouth at once.
Veronica: Hey, stop banana shaming her.