Shit minder
The person you get to look after or 'mind' your stuff or 'shit' while you go to the bathroom or have to do another 5 minute errand.
Sarah: "Dude, I need to pee... can you mind my shit?"
Anthony: " Fuck you! I've had enough of being your shit minder!"
Sarah: "..."
Anthony: " Fuck you! I've had enough of being your shit minder!"
Sarah: "..."