third base coach

A baseball analogy for a sex act. This occurs when two people are in the same room masturbating, getting off on each other masturbating, but not touching one another.

A: How far did you get with Christina last night?
B: She is super celibate so all she would let us do together is third base coach each other.
A: Did you talk during it?
B: Yea, it was pretty weird...

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