Turd is an acronym for Toyota Urban Racing Development. Toyota was all set to stamp TURD on the side of their trucks in an attempt to make trucks more appealing to city dwellers, hence urban and racing being part of the logo. Just prior to shipping the trucks to the US Toyota learned what turd ment in english, so now their trucks are stamped TRD. Urban has been left out.
Hey did you see that new Toyota truck? It's a TURD!