(verb) To
walk around wearing a shirt but no pants or undergarments. Synonym of
Donald Duck. Technically applies to men only, but plumbing
issues aside, easily applies to women, too. Sometimes a mild pejorative, implying imcompleteness or an unwillingness to commit.
"It's so
beautiful out, I'll think I'll shirtcock today." (verb form)
"There
sure were a lot of shirtcockers out on the playa this year." (noun form)
"When Mozart died, he shirtcocked his 'Requiem.' Someone else had to finish it." (verb form, implied meaning)
"Annaconda, quit shirtcocking and just
pick a place to eat!" (verb form, implied meaning)