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5.
Used in the movie Deuce Bigelow 2 as a euphamism for a sexual act. The act is never defined, but I would assume it is a funny modification of the term "Dirty Sanchez."
Dirty = Filthy
Sanchez = Lopez

Filthy Lopez = Dirty Sanchez

Look up Dirty Sanchez for definition
by Chris December 26, 2005
 
1.
Taken from Duece Bigalow European Gigalo. Since it is based off of the Dirty Sanchez when you make a mustache effect. The Filthy Lopez is when you engage in anal sex then make a full goti and sideburns.
I gave Ted's mom a Filthy Lopez Like she never had before.
by Mike Dziedz July 09, 2006
 
2.
About forty bucks. Same as downtown.

Duece: "What's a Filthy Lopez?"
T,J.: "About forty bucks. Same as downtown."
by hellomynameis August 19, 2006
 
3.
A "Filthy Lopez" is a "Dirty Sanchez" add the sideburns.
I gave Sara a "filthy lopez" last night and she totally looked like Elvis.
by Gittinbizy February 10, 2012
 
4.
A "Filthy Lopez" is a Portuguese equivalent of the more common Dirty Sanchez.
A considerable degree smuttier than its Mexican cousin a "Filthy Lopez" additionally involves the use of Peri Peri sauce in the Dirty Sanchez act.
Margaret was horrified when she was given a "Filthy Lopez".
by The Ho Dawg February 25, 2009