That would be a perfect gift for my old shop teacher, he would put a pint of grease in his hair every day. hahaha
One time a kid in class went up to him and with a icecream stick stuck it in his hair and pulled out like a dipstick and told him very loudly "You are 1/2 pint low today" so the class could hear and laugh, it was very funny.
Wait, maybe this grease comb is something different????