I am taking a time out from texting tips to bring you sports references! This is mostly because of the NBA playoff and baseball fever that has seemed to infected everyone around me.
knockout: someone very good looking
strike out: to fail in the attempt to catch someone's attention and/or get with them
"He could go all the way!": famous announcer quote, he very well could have sex with her tonight
play/hit for the other team: to like the same sex, usually mentioned about a homosexual that a heterosexual may be attracted to
touchdown/homerun/goal/score: someone got laid
stranded on base: refers to the sexual bases, he did not "go all the way"
leading rebounder: someone who dates too many people too quickly after breaking up with the previous boyfriend or girlfriend
leading scorer: the person who sleeps with the most people
time out: code for I want to break up but I am too scared to do it right now
play the field: to date around, keep options open, not wanting to settle down
blocked: someone is preventing a pursuer from having sex
dove in: got too involved too quickly
go hard in the paint: trying as hard as possible to get with someone at a particular moment
referee: anyone who stops your game
game: your ability to attract others and/or seduce them
take a charge: have someone swoop in and steal your object of affection of the evening.
This list is obviously in no way comprehensive, and these things can have multiple meanings. But I have given you what seems to be their most common meaning. So, now if I use any sports references you know what I'm talking about because I just gave you a dictionary.