Some humourous advertising slogans, some of which must have been intentional:


Wang Computers: 'Wang Cares'

Swedish firm Electrolux campaign in the US: 'Nothing sucks like an Electrolux'.

KFC (finger-lickin'-good) translated for the Chinese market into 'eat your fingers off'.

Colgate introduced a toothpaste in France called the 'Cue', which is the name of a French pornographic magazine, and, I think, means a*se in French.

Parker Pen's slogan of "It won't leak in your pocket and embarrass you" became when translated into Spanish for the Mexican market "It won't leak in your pocket and make you pregnant."

Fictional ones
for a mortury: you stab em we slab em

The last chance bar: Liquor in the front, Poker in the rear

Urban myth #94 - there is a camping shop in (insert town of your choice) with a sign in the window saying -

"Now is The Winter of Our Discount Tents"

Even if fake I still like that one :D