The time Nana sucked on a monkey's testicle...

There it can be seen. All round, and shiny, and wet, and unbearably acidic, resting on her disbelieving tongue.
She laughed as she saw us all grimace while popping in a couille de singe. She thought that we were putting it on. That we were exaggerating. That we were monkeying around.

We were not.

The monkey's nads really are that sour!