A reference to "humping".
Near the start of the movie Tom Hank's (police) partner asks him about getting laid.
Tom Hanks and his Girlfriend kiss
Tom Hanks is seen wearing a pair of black bikini briefs in a few scenes. They hug his crotch and booty tightly, and his bulge is very visible.
Conversation between Turner & girlfriend about "how far they would go" with each other, you see Tom Hanks opening the fridge in his boxers and his girlfriend walks up behind, implication is they had sex, and they have a short conversation about how his back was more elastic and how she wore him out. While making breakfast they start to kiss passionately, and it seems it's going to show a sex scene when it suddenly stops.
A scene where it is implied that Turner's girlfriend is groping him.