First Base - Simply put, first base is kissing. Some people define it only as French kissing, while others include all kissing.

Second Base - This is going up a girls shirt and fondling her breasts. It also includes using the mouth on the breasts.

Third Base - This encompasses the most sexual activities. Third base is any touching of the genitals. Thus masturbating your partner whether it is fingering the girl or giving the guy a hand job.

Fourth base - oral sex. Giving a guy a blowjob or eating out a girl out is also considered to be getting to fourth base.

Home Plate � Reaching home is used to refer to having sex.

1st Base - Is Kissing, french, open mouth or just a peck. Also any above the belt touching is included in this base

2nd Base - Hands below the belt. Fingering for girls or hand jobs for the guys.

3rd Base - When mouths are used below the belt. Essentially going down on a guy or girl. also This base includes the sex toys.

4th Base or Home base/plate - Going "all the way," doing the deed, Slamming it, Fucking, Sex, intercourse, "doin it," getting friskey so on and so forth.

(some people use a 5th base or a 'grand slam' to refer to anal sex while other include it in the 4th base. its really up to the individuals wheter they want to include it)

first base includes kissing whether French, open mouth or peck on the lips or above belt touching

second base includes oral or heavy petting or hand jobs ,hands go below the waist

third base includes sex toys fingering

fourth base includes sexual intercourse/ going all the way (anal also)