From S6, Ep3: “The Gang Buys a Boat”
Mac: What do we need a mattress for?
Dennis: What do you mean what do we need a mattress for? Why in the hell do you think we just spent all that money on a boat? The whole purpose of buying the boat in the first place was to get the ladies nice and tipsy topside so we can take ’em to a nice comfortable place below deck and, you know, they can’t refuse, because of the implication.
Mac: Oh, uh… okay. You had me going there for the first part, the second half kinda threw me.
Dennis: Well dude, dude, think about it: she’s out in the middle of nowhere with some dude she barely knows. You know, she looks around and what does she see? Nothin’ but open ocean. “Ahh, there’s nowhere for me to run. What am I gonna do, say ‘no’?”
Mac: Okay. That… that seems really dark.
Dennis: Nah, no it’s not dark. You’re misunderstanding me, bro.
Mac: I’m-I think I am.
Dennis: Yeah, you are, because if the girl said “no” then the answer obviously is “no”…
Mac: No, right.
Dennis: But the thing is she’s not gonna say “no”, she would never say “no” because of the implication.
Mac: …Now you’ve said that word “implication” a couple of times. Wha-what implication?