For those innocents reading this, hoping to fully understand these three new posters for Good Luck Chuck, let me explain a few commonly held notions about sexual imagery.
1. Practically anything remotely dowel shaped can be thought of as a penis. If said phallus drips a white fluid and is licked, the imagery is heightened, even if the object barely resembles the shape of a penis whatsoever.
2. If a guy is shirtless and smiling, and you can see a head peeking out from his crotch, that man is almost certainly receiving oral sex.
3. I guess if you put a hole in a grapefruit, you can have sex with it? This one kind of lost me.
These descriptions will make more sense if you look at the other posters, under the cut.