get one's knickers in a twist

lose it flare-up see red blow a fuse hit the roof fly off the handle freak out have a fit go ballistic throw a fit hit the ceiling have kittens go wild

unwind take it easy luxuriate unbend loosen up buck up

get one s knickers in a twist

get one's head out of the clouds get one's hopes up get one's just desserts get one's laughing gear round get one's leg over get one's lines crossed