Captain Toad's farting got him stuck within a warp pipe, with the unlucky leader filling up both the green colored pipe and his pants with pungent poots for he struggled to get out and it was cramping his style.
"Man; I really gotta watch what things I climb into!" Captain Toad complained while taking in a breath of air and tried squeezing himself, failing for he was both pudgier than he expected and he had his content filled backpack on his back. "If only my bag wasn't holding me back... and it's not even this pack, my dump truck refuses to get small even with my Toad toots!"
Evidentially the captain unloaded enough flatulence for the pipe to suddenly suck itself back into the grass and then blast away the Toad Brigade leader high across the sky, with it going from clear blue to brown due to his fungi flatus.