I don't think they are offering him that bottle. He just about impailed himself on it if you look at the just before scene it's just where he lands (double ouch) lol funny though (expensive prank too)
It's because of idiots like that, that we all get a shed load of health and safely crud to suffer! Who pay's the medical bills when he's in wheelchair for the rest of his life with a broken back. I certainly hope that it's not the garage owner! Maybe his 'mates' will have a whip round and buy a round of drinks!
There are pranks, and there pranks. Airbags are highly explosive devices.