1 definition by Cathy Guiltt

1st Base - Kissing, open mouth. Also any above the belt touching is included in this base.

2nd Base - Hands below the belt.

3rd Base - When mouths are used below the belt. This base also includes the sex toys.

Home Plate, (Home Run) - Intercourse

5th base or 'The Dugout' - Anal Sex.

A grand slam, would be achieving all of these on a first date.
First, Second, and Third are the typical sexual bases. Anything beyond those and you probably aren't using baseball metaphors any longer anyways!

(Unless of course referring to 'The Dugout', because that's just hilarious!)
by Cathy Guiltt February 17, 2014
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