Smack both cheeks with one hand
Replaces the phrase "kill two birds with one stone" meaning you completed 2 tasks at the same time.
I think I'm going to smack both cheeks with one hand and use my city council paper for both my English and Politics class.
both cheeks
A fully-completed work; twice as much work as doing it half-assed.
"I could just do a half-assed job of covering the topic in 3 minutes, but I'm going to try to give you both cheeks here."