WHY was he doing THAT? (Star Vs The Forces Of Evil) 

In reality he’s a snake and wanted to see if he could swallow them whole

He was trying to make mr Diaz so he'd have a heart attack, and ms. Diaz Thick, kill the husband and get the wife, classic villain.

a lil sus

it still doesn't explain the measurements..... He's still suspicious

Has to get a steady supply of meat some way.