i tried testing my boyfriends strength!! it backfired! Testing my boyfriends strength except it backfires. Woman testing her boyfriends arm strength by putting mayonnaise on his hand, and he holds out his hand with mayonnaise, the woman is trying to push his arm down and the man shouldnt let his hand touch the table, but the pranks is the woman putting a lot for force towards the arm so when she lets go the mans hand would bounce back and gets the mayonnaise on his face, but the mas was able to redirect his hand towards her instead