2 sided debate

Two opposing views, where both parties debate and present their arguments.

Topic: 'Smart phones make us stupid, agree or disagree?'

Girl: Smart phones make us stupid, because we always cheat using the phone.

Boy: There is no proof that smart phones make us stupid though.
Girl: You are using the smart phone and you have already failed the exams. Duh! You have lost the 2 sided debate!