The office tea room is more often than not the site of some very awkward conversation. You know the type, you're there making your coffee, your boss walks in, you have to make polite small talk. There's the extended pause.

There may be an attempt to change the subject, but more than likely, you'd rather shove a Tonka Truck up your but rather than endure anything further. It's at this point you can employ the "slow jerk". Guaranteed to make anyone uncomfortable enough to want to end a conversation and leave you alone.