The Houston Astros and Boston Red Sox conspired with the San Francisco Giants to bang on trash cans again, since nobody would expect them to be stupid enough to do that more than once. The more teams that are in on it the merrier, especially if they get caught again, it's not just one team getting caught.
MLB investigators- Are you guys banging on trash cans again?
Houston Astros- We're not not banging on trash cans. Everybody is watching the Olympics, why not?
Boss: What did you get done?
Worker: It was like watching trash cans dry?
Boss: What?
Worker: You know what I mean.
Boss: They are still wet though.
Worker: Exactly that's why I've been smoking for the last 5 hours I don't know why they take so long.
The mouth is open as wide as possible giving the penis a moist feeling, but hardly any contact. Thus creating the trash can effect of a wide opening going on your dick.