Captain Toad's farts were causing him to laugh it up as if it were laughing gas, with it getting on the nerves of his purple colored Brigade member who just wante to shift through the mail instead.
"Captain how long are you gonna fart?" Mail Toad complained since he was starting to feel nauseous upon getting a sense of this shroomy stink.
"For as long as I want." The smelly Toad Brigade captain responded for he then farted in the purple Toad's face; much to the dismay of the latter. "And that's just the way I like it!"
"But you just can't keep doing this-"
"I can and not a thing you say will change my mind."