Not Keeping In Laughter - Used to express overwhelming amusement or pleasure following a humourous statement or event. A substitute for the unfashionable 'LOL'.
"Did you see Tennessee's tiny hat collection?"
"Yes, that was the biggest tiny hat collection I've ever seen. NKIL!"
"Yes, that was the biggest tiny hat collection I've ever seen. NKIL!"
by gregghead69 July 26, 2021
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