pop into

pop something into something

 and pop something in
to fit, snap, or press something into place in something. Lee popped the lever into place, and the machine began to function. Lee popped in the plastic part, and the toy ran beautifully.
See also: pop

pop into

v.
1. To visit some place briefly: I'm going to pop into the store for a moment.
2. To put or throw something into something suddenly: He watched the movie while popping marshmallows into his mouth. She popped the DVD into the player.
See also: pop