A subtle, predetermined action warning of sexual climax.
The tap-out is usually 2-4 small pats where the hand is currently resting/grabbing. This courtesy warns a partner to either "stand clear" or "drink up" depending on this partner's preference. The tap-out alows warning of such without anyone yelling "I'M CUMMING" repeatedly.
When Tasha is blowing me, I have to tap-out before I get off because she dosent want it in her mouth.
A love interest, usually female, who ignores flirting and thoughtful actions because of her infatuation with someone who would probably never have her.
Tom: Who are those flowers for, Harry?
Dick: Dude! Are those for Tracy again?
Harry: I think I've got her close to a date!
Tom: No way! She's obsessed with her boss.
Dick: Yeah. She's such a Lois Lane.