[stonemetal12]

"I did a runner" British idiom means I ran away without paying. The only problem with "I did a water" is I don't know what "a water" is without context. If person A said "I did a shot" and person B said "I did a water", it would make perfect sense.

[thfuran]

I can't offhand think of a case where that construction is appropriate for a noun that isn't a nominalized verb.