What the....

damn...yesterday...on my tuition class (math)..a test was held..during the test..I can't figure out a question which is need a culculator to solve it...I didn't bring mine..so, I ask it from my buddy which was sitting on my left.. he actually a sensitive guy..then he gimme the culculator..suddenly , the teacher saw him...like wanna copy my answer...he scolded him...poor guy...his face just look like a crying baby after being scold..until now..he talk nothing to me...