Occurs during sexual intercourse, when the male's penis is at its
apex of
stiffness, length and girth and as far as it can go into
the female's vagina, the male then sticks his finger into the female's asshole. Hence, The Half Slab, Combo Chicken Breast.
Male -
Whispers in
the female's ear "That's
the Full Slab" And sticks his finger into her asshole.
Female - Replies in reaction to the gesture. "No, that's the Half Slab, Combo Chicken Breast."