The line comes from the French dub of The Goonies, the 1985 adventure film about a group of kids hunting for pirate treasure. In that version Chunk is called Choco and Sloth is called Sinok, which explains the tags and search terms around the clip. The brief exchange became a nostalgic quote for French viewers who grew up with the dubbed film, and short clips of it now circulate on soundboards as a ready made teasing reaction.
About this sound
Sinok telling Choco tu pues le gymnase in the French dub of The Goonies, a short insult line used for jokes, reactions and movie quote edits.
This is a very short French movie line where Sinok teases Choco with the insult tu pues le gymnase, literally saying he smells like a gymnasium. The delivery is blunt and childish rather than truly mean, with the odd comparison making it funnier than a normal insult. It lasts under two seconds, so the whole joke lands instantly. Listeners who know The Goonies recognise the characters straight away, while others still get the playful mocking tone from the voice and phrasing alone.