Oh, people who do that are terrible. But then, nerds have so many terrible personality tics like that, which is why they/we are considered socially ungraceful.

Oh, people who do that are terrible. But then, nerds have so many terrible personality tics like that, which is why they/we are considered socially ungraceful. Another favorite of mine is the one where you take what someone said super literally, as a joke (a terribly unfunny joke).