facetexting
You're facechatting and you both start asking questions at the same time, and you both answer each other’s questions, making it look like you’re both trying to be smart. But you're just being dumb and annoying.
'Hey, what's your name?' 'What's yours?' 'Hey, what's your name?' 'What's yours?'
'You like pizza?' 'You like?' 'You like pizza?' 'You like?'
'What's your favorite subject?' 'What's yours?' 'What's your favorite subject?' 'What's yours?'