Dirty Upstein

(Verb) Sex with a Chick Fil a sandwich. Either males or females may partake in this action although in different respects. A male would insert his penis between one bun and the chicken until adding his own sauce. A female would first rub herself against the sandwich as a whole after first applying her sauce of choice to herself and then later in this endeavor would use the chicken as phallic insert-er of sorts.

Comes from the name of the location where the only Chick Fil A in New York City exists.