A whoofle is a short pyrotechnic display that is a mainstay of Big Clive's live streams. The device used to produce whoofles is called a Whoofler. Whoofles traditionally happen on stream every hour on the half hour, i.e. at minute 30. They are often—but, unlike Jägermunions, not always—in tribute to someone.
A whoofle is performed thus:
Clive periodically flame-proofs the ceiling with borax in his streaming room to ensure that his whoofles produce no lasting structural damage to his house.
See also: Foamy-Whoofler