We've got a similar idiom in Spain: "la junta de la trócola" ("trócola's joint", not really translatable, though trócola is apparently a synonym for "polea", "p

We've got a similar idiom in Spain: "la junta de la trócola" ("trócola's joint", not really translatable, though trócola is apparently a synonym for "polea", "pulley"). It was coined for a cigar brand TV commercial back in the 90s and also alludes to a fictional part, in this case used by a car repairman to fraud a customer into paying more in said commercial.