look up any word, like pretty face challenge:
a) Get over it

b) cheer up

As bunnies jump over all kind of things. London citizens, especially in the area of Camden started to use the term "bunny it" to cheer their mates up or simply help them to initiate the process of "getting over something" by using a happy term

bunny it
Bunny it babes!
by ChesterBester March 11, 2011