drop in someone's lap
Give to someone suddenly or without warning. What is given may be desirable, as in I'm just going to drop the promotion in her lap this afternoon, or it may be burdensome, as in They simply dropped the employment problem in our laps. The former usage dates from the mid-1500s, the latter from the mid-1900s.
Words nearby drop in someone's lap
drop goal,
drop hammer,
drop hand,
drop in,
drop in one's tracks,
drop in someone's lap,
drop in the bucket,
drop initial,
drop keel,
drop kick,
drop leaf