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What you usually call an abnormally very small penis. Normally the 'sir' is added to increase the penis's already low self esteem due to it being quite small.
Me: "Hey, Dude, how is Sir John doing? Did he enjoy last night with me?"

Dude: *Thinks: She called him Sir, so I really was mistaken when I thought it was small* "Sir John is doing GREAT, thanks."
by nicegal69 November 12, 2010