get stoned with two birds
To put off several different tasks at once, usually to smoke some weed. Can also refer to the state of lethargy that typically accompanies such activity.
Instead of paying the rent and going to class, I decided to get stoned with two birds and smoke a joint.
Getting stoned with two birds
When you try to kill two birds with one stone but it doesn't work out
Joe tried to shower and do his homework at the same time but he ended up just getting stoned with two birds