Top Definition
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
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