The verb stink is traditionally inflected stank in the past tense and stunk as a past participle. For example, one might write, I don’t stink today, but I stank yesterday, and I have stunk for many years.
In the U.S., stank has developed a few new colloquial senses. As an adjective, it means gross or having poor personal hygiene. As a noun, stank means an extremely unpleasant odor. There’s also stank eye, which denotes a disapproving facial expression (though this form is less common than stink eye). Also, in the last example below, the writer seems to use stank in reference to a perfume, but we don’t know whether this is just a one-time use of the word.
We find no examples of these new senses of stank in edited publications, so these examples are drawn from blogs:
Secondly, your stank attitude reflects the belief that others’ feelings don’t matter. [AskHeartbeat.com]
I read a lot about the stank issue. Namely, that people are stanky after they run/exercise and that the stank does not always come out in the wash. [My Quest for a Smaller Chest]
If I give her the stank eye, will she take this tutu off? [Pug Possessed]
Namely, the ever-popular and sexy-to-many Taylor Swift, pimping her new stank at Macy’s. [Egotastic]