1 definition by SBtheBoss

The act of pulling out ones penis and squirting mustard on it, thus resembling a hot dog. A bun can be added to increase the effect.
Scott- "I was totally wasted last night and my friend said that I had even performed a portland frank. I said no way and un zipped my pants, only to find mustard stains."

Mike- "Damn, must have been one hell of a night."
by SBtheBoss June 18, 2011
Get the Portland Frank mug.