Easy On The Brain - Saying something was so simple that even your brain could do

Saying something was so simple that even your brain could do it, but with a side of bragging and a lot of trash talk.

"That math test was easy on the brain. I could’ve solved it in my sleep and still had time to text my ex."

"Easy on the brain? I finished that puzzle before you even opened your eyes."

"Easy on the brain? I could’ve beaten that game with my toes and a dictionary."