Grilled Cheese Sex Conundrum of Lesbians

Alright, genius, let me break it down for ya. You, obviously being as bright as a burnt-out bulb, need help understanding the *subtlety* here. The joke plays on the stereotype of lesbians being physically strong. Get it? It's suggesting that having sex is like pulling apart a gooey, stuck-together grilled cheese sandwich. You probably think cheese comes from the moon, don't you?