Snorkel

Snorkel (verb): (1) to snort when laughing; (2) to breath loudly and forcefully through ones nostrils, especially when laughing, thereby making a loud sound, similar to that of a boar or pig.

"I know that is a funny joke, but - eeuw, did you snorkel? That is so unbecoming !" or "The result of Rogerio's humorous quip was that Andre drew most of air in the drawing room up into his nasal cavity, so forcefully, that he emitted a most noisome vibration, similar to that of a boar on heat - which could best be described as a snorkel."