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
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The act of dressing up one's penis as a hotdog, typically by covering it with mustard.
When changing his underwear, Bill discovered there was mustard on his junk, apparently the result of an attempted Portland Frank.
by MadMark255 December 18, 2021
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The name given to using your penis like a hot dog by putting mustard on it made famous on Jackass 3.5
I woke up the next morning with mustard on my penis, I must have made a portland frank last night.
by Prince Radames June 6, 2011
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From the new Jackass 3.5 movie. When you wake up with mustard all over your wiener/dick/cock/penis...
John: Dude, was I really drunk last night?
Matt: Yeah you grabbed the mustard for some reason and gave yourself a portland frank all over your cock.
John: No i didn't....
Matt: Check your dick...
John: Ohhh shittttttttt.......
by SEXYcheerleaderBABE June 6, 2011
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