drop/dump (something) in/into/on someone's lap

1 of 2

phrase (1)

informal

: to give (something) to someone suddenly even though he or she did not want it or expect it

Another major problem was dumped into her lap.

drop/fall into someone's lap

2 of 2

phrase (2)

informal

: to come to a person suddenly in an unexpected way even though he or she did not try to get it

This wonderful new job just fell into my lap when I was least expecting it!