One more thing to say about lay and lie: LAID

If you recall from my post on July 25, lay in the present tense is a transitive verb = to place something down. Its past tense form is laid.

I laid your iPad on the table.

He laid the bowling ball on my foot.

The hen laid an egg.

She laid the baby in his crib.

lay; laid (transitive verb) = to place something down

lie; lay (intrasitive verb) = to recline; to rest on a surface