Definition
"Whacko" is a slang term for someone considered eccentric, crazy, or irrational. It's similar to "nutter" or "loony" but often used in a more lighthearted or humorous way. Think of it as a less offensive way to call someone crazy or weird. It's like saying someone is "out there" without being overly judgmental. It implies a deviation from the norm in a somewhat amusing way. ðĪŠ