Important question

Is a 'head sweater' either:

1. Someone whose head sweats on occasion, such as T's head after he eats spicy foods

or

     2.  A knit hat, likely with an argyle or striped pattern

Thoughts?

PS. I originally used the phrase when referring to T's head after he eats spicy foods. Then I realized that I was sooooo funny. At least to me. Because I pictured T with a sweater on his head.
.