Extra fun and super sneaky: a simple needle & thread, when threaded from one of the peel's ribs/crests to the opposite(ish) one, and onto the next lower (~½" apart), working from one end to the other... will result in a sliced banana inside the peel w/o any sign of how except for tiny dots where the needle pierced the skin (and, they get lost in the browning blemishes pretty quickly)... 😜🤘🏼

Some old granny meanwhile:

What did I do? I don't remember...

You can see the letters in the left side of the picture, and it would be obvious if you were holding it. You'll only catch people out who don't even try to look at their bananas when they buy them.

Tampering with other customers food should make you first in line of becoming a ghost

"next time, tomato"