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Meeting people is always awkward and there's a certain set of rules.
Most of them are common sense, and you should probably know them by now.
However, there are some things you may be doing, thinking they're perfectly natural behaviour, that are terrible errors.
We asked around the office and did some research, and have since compiled a top 13. Think of them as the the 13 commandments. And we command you not to do them.
Or do as you please, you're your own person.
Vote for the one that grinds your gears the most:
More: The ten most annoying things people do without even realising