How to say “He drizzled half the gravy boat over his mashed potatoes before anyone else had even sat down.” in Japanese
In Japanese
みんなが座る前に、あいつグレイビーボートのソースを半分もマッシュポテトに回しかけちゃったよ。
Minna ga suwaru mae ni, aitsu gureibībōto no sōsu o hanbun mo masshupoteto ni mawashikakechatta yo.