The comical cheer said by many of the characters in the Banjo Kazooie video games series by Rareware LTD. Two of the most notably characters to say this is Boggy the polar bear while racing on his sled, and Captain Blubber the Hippo on several different occasions.
WAHAY! You've found my secret 'moving picture' game! ~ Bottles the mole.
by BKplayer June 07, 2010
A loud trumpeting shout of victory. Derived from the briney deep of the lair of Petey the Shark.
"Hey Josh is here...WAHAY!"
by Peter Bawden February 22, 2005