drop something in somebody's lap
dump something in somebody's lap

You just dumped me in her lap and took off.

When the computer died, it dumped everything in my lap automatically.

"I was beginning to think that all our diplomatic problems would be dumped in my lap."

Don't think you're going to dump everything in my lap and play hooky.

With the aces we have dumped in his lap, he might make it.

I have a big job to dump in your lap.

And then she dumped the whole tray in his lap.

All will be dumped in the new government's lap.

And look at the mess you dumped in my lap!

Do you find it odd that she dumped all this in your lap?