[gnuvince]

It does sound a little off. "M'a t'en crisser une", "M'a t'en calisser une", and "M'a t'en sacrer une" all sound fine. I'd use "tabarnak" to finish the sentence: "M'a t'en crisser une tabarnak!"

[euphemize]

Yep, sounds much more natural at the end :)