1.When one plays "baseball" they are talking about how far you got to sex. Getting to first base meaning you just madeout with your boyfriend or girlfriend. Getting to second base is basically strip making out, or making out naked,as well as handjobs and finger. Geting to third base is head (blowjobs) and eating. Hitting a homerun is having sex.
Guy 1- "Dude, I hear you were playing baseball with Jane last night?"
Guy 2- "Yeah man! 3rd base man!"
Guy 1- "Damn man, you almost hit a homer?"
Guy 2- "Almost..."