a denim or jean shirt.
Wow that jirt looks mighty ravishing on you Bubba.
A tee shirt that is made to look like a professional sports teams uniform. This retains the classiness of the original uniform, but at a much more reasonable price.
That jirt looks so much like the real thing, and at a third of the price!
A combination of a jumper and a shirt made by sewing just the neck area and collar of the shirt into a v-neck jumper. Traditionally worn by people of a lazy persuasion who would otherwise be demonstrably adverse to ironing.
"You're looking significantly smarter than usual, it really looks like you've made an effort Patrick." "That'll be my new jirt."