Combination of "Sleaze Bag" and "Douche Bag" that you say when furiously trying to describe someone you loathe and can't decide which term you want to use, so they come out at the same time.
So Becca, how'd your date go?" "Don't fuckin' get me started... he kept trying to get me to "try the long island iced tea" because "they make it really good here". He tipped the bartender to keep putting too much booze in my drinks. Then he offered to pay my cab fare on the condition that I was going back to his apartment. He was such a fucking... sl... d... slouche bag!