A shady character or someone who has just comitted a stupid act or to have jesteror clown like behavior with no laughs. If person is overweight they are considered a sweat hog.
by Nitchoff what! October 30, 2007
Believed to have originated on the Eastside of Manhattan, this is simply a person who is not original in the least bit and feels the need to copy everything that someone else does. They carry out the verb "sweat", which would make them none other than a big, fat SWEATBALL!!!
by DiVa! June 25, 2004