Put his boots on
Used to describe someone (typically a male) who has apparently completed a sexual conquest. Derived from the original Star Trek televison series in which, on several occasions, Captain Kirk obviously bedded the hot woman who is never seen again. ...Alien chick in 60s go-go/hippy fashion apparel primping while Kirk pulls his Star-Fleet-issue black leather boots on.
A smarmy, smug man walks out of bedroom at a loud party. "Observe! Manfed has just put his boots on! Matilida will be out shortly!"