1) A woman that sleeps around. A lot. A dick-dock because she lets all penises land in her port. And by port, we mean vagina. Somewhat similar to a delivery truck entrance to a store, in that there is constant loading and unloading in the dock. She's hot, but if you sleep with her you'll just be another notch in the post. And probably get a disease.
2) A word that rhymes with tick-tock. Used as a triple-tonguing exercise for wind instrumentalists. Said as "dick-a-dock"
1) Dude 1: Man, that girl is such a dick-dock.
Dude 2: Dude, I know.
Dude 1: She's still hot. I'd tap that.
Dude 2: You're forgetting that she's a dick-dock. You'll catch
something from her.
2) No, say "dick-a-dock." Tri-ple-et, dick-a-dock. It's easy.