A female that is extremely adept at giving fellatio, sucking dick, polishing cocks etc.

Dervied from the notion of oral sex being third base, and there in the enshrinement into the Hall of Fame for exceptional play at the position.
Cory : Wow, what a first date, Michelle was fucking Mike Schmidt on my cock last night. She's fucking George Brett with a dick in her mouth. Couple more like that and I'll have to enshrine her as a Hall of Fame Thirdbasewoman.

Allison : She ain't shit, unzip your pants and I'll take you down like Brooks Robinson.

Cory : Please, last time you blew me it was like Scott Brosius meets Jerry Hairston Jr.

Allison : Ouch.
by The Rockit February 24, 2010
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