The slows is that time of the day when you get a serious and sudden case of sleepiness. It is difficult to even breathe when you get the slows; and you usually must remedy it by consuming caffiene or sugar, or by possibly closing your eyes for a small nap.
"I have the slows so strong, girl, that I must drink a massive cappacino and eat a chocolate bar, or I might slip into a walking coma. "
A condition that some people have where they are extra slow about doing something and no matter what you do you can't make them speed up, especially when you are in a hurry to get something done.
He's got the slows.