“Seriously!,” in slang

NO CAP!

Not available

This clue is asking for a slang phrase that means "I’m being totally honest" or "no lie." "No cap" is a modern expression (originating in African American Vernacular English) where "cap" stands for a lie or exaggeration—so saying "no cap" emphasizes sincerity. The exclamation mark in the answer hints at the phrase’s emphatic, casual tone, matching the clue’s playful slang style.