dig her down proper
When banging a woman, to "dig her down proper" is to make sure she cums before you.
Person 1: I just fucked this MILF last night.
Person 2: Oh yeah? Did you "dig her down proper"?
Person 1: Hell no, I don't give a shit about her nut.
Person 2: Oh yeah? Did you "dig her down proper"?
Person 1: Hell no, I don't give a shit about her nut.