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1.
a bastardized english version of the French word "voila" meaning "there it is"
Often used by morons in an attempt to sound more intelligent than they actually are.
Incidentally, voila sounds phonetically like whala hence the improper spelling.
Just try plugging it back in and opening your software and give it a minute or 2 and whala, music restored.
by Apocalyptimaniac December 28, 2005
 
2.
To confirm or swear unto some higher power.
Robert: "Dude, I had sex with ______(friend's hot mom) last night!"
Steven: "Whala you're lying."
Robert: "Dude, whala I did and it was fucking great"
by Pimp minister sinister November 14, 2005