The initial idioms of the letter J

jump bail	jump bones
jump clear of	jump down
jump down throat	jump for joy
jump from to	jump in
jump in the deep end	jump in (one's) skin
jump in with both feet	jump off
jump off the deep end	jump on
jump on the bandwagon	jump out of
jump out of one's skin	jump out of skin
jump out of the frying pan into the fire	jump over
jump ship	jump smooth
jump someone’s bones	jump street
jump the queue	jump the track
jump through a hoop	jump through hoops
jump to a conclusion	jump to conclusions