Check the Garden 

Going out for a smoke - commonly used by stoners to go out for a joint, but may just refer to a cigarette.

"Do you want to check the garden??"

Check the Garden by SibLIGHTS May 30, 2016

Check out the garden 

Euphemism used for the act of a middle aged man lustily checking out his young neighbor .

John: There's Melanie from across the street. I'm going to check out the garden.

Scott: Sick fuck

Check out the garden by Genitalien August 1, 2020