First is making out with tongue. If done properly, there should be no slobber on the female's face afterwards.

Second base is when a guy feels up a female's breast over clothing, under clothing, or under the bra.

Getting to third with a lady is fingering, and hitting her G spot- the bone or hard wall at the top of the inside the vagina where she is most sensitive.

Fourth or hitting home is when the guy penetrates her vagina with his member, and has sex.

Note: Third and fourth is usually done in one "run," though that run may require patience and a deeper emotional connection.

A term used to reference cannabis/marijuana/weed.

One step up of First Base, heavy petting and feeling up while making out, up the shirt or shirtless for both partners.

In non perverted terms, the base diagonal from home plate in baseball.

first base: kissing, french kissing, open mouth
second base: feeling up, touching breasts/ nipples, shirt off, touching penis
SHORT STOP: fingering, hand job
third base: blow job, eating out, tossed salad
home: duh, sex

In the standard system of baseball/sexual metaphor (see first base, second base, home run), fondling the breasts and/or buttocks of one's partner.

highly debated base when talking about sexual accomplishments, all that needs to be done is to clarify what "league" youre "playing" in.

second base in minor league baseball is feeling a girl up.

second base in *major* league baseball is fingering or handjob.

Major league- 1st base makeout with feeling up; 2nd handjob/fingering; 3rd blowjob/ eating out; home sex

minors- 1st base makeout; 2nd feeling up (breasts); 3rd oral/fingering/handjob; home sex