Place this clip at the exact moment of the reveal, then follow it immediately with a confused reaction like you what for the response beat. For a bigger derailment, precede it with dj airhorn to fake a celebration before the conversation collapses into that reaction sequence.
About this sound
A very short voice clip of Old Gregg proudly announcing 'I got a mangina' in his soft, unsettling delivery. It lands funny and deeply awkward at once, that mix of confusion and oversharing that makes people pause mid-conversation. It comes from The Mighty Boosh, where Old Gregg is the strange, lonely creature living under the lake.