1 definition by Chunks of Cat

adv. - to do whilst wearing a shirt; involving a shirt or shirts.
- Will you help me pick out an outfit for tomorrow?
-- Shirtainly.

- Hey, we should go to the mall with clothes on for once.
-- That is a wonderful idea. I shirtainly am tired of people always staring at us.
by Chunks of Cat October 12, 2011
Get the shirtainly mug.