This happens when a body part of yours, mainly your butt, falls asleep.

Pata Sucia: Spanglish; Direct translation- dirty foot; used in reference to men and women who remove their shoes in public and then proceed to walk barefooted wherever they may be; mainly found at night clubs or after being at a night club.

LADIES, YOUR STILETTOS MAY BE PAINFUL, BUT THAT IS THE CHALLENGE YOU ACCEPTED WHEN YOU PUT THEM ON. BEAUTY=PAIN