lake lettuce
n.— «Some might refer to them as moss, pond scum or lake lettuce, which encompasses a wide array of aquatic growth.» —“Weed control curtails two fishing trips” by Steve Ford Courier & Press (Evansville, Illinois) May 4, 2008. (source: Double-Tongued Dictionary)
Further reading
Louie from Black Hills, South Dakota, recalls the time his girlfriend fell off a paddleboard and into a lake, at which point his father declared She bit the farm! This peculiar locution is most likely his dad’s own combination of two...
Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...