Slut

Kitchen jargon for an extra chicken tender.

Say there is a rush of diners who order chicken tenders.
Chicken tenders are tossed in the fryer baskets in bulk.
Any extra chicken tenders are left to rest in the bain-marie.
Front-of-house asks the back-of-house if they have any sluts ready.
Everybody loves sluts.

FOH looks over the bain-marie.
He asks BOH if he has any sluts.
"Sorry FOH, there have been no large orders for chicken tenders."