it's YOUR fault!

Ask any couple: Arguments can bring out the worst impulse-driven insults EVER.

One second you're having a calm, rational debate about whether you should stop for directions. Then, before you know it, you're telling your boyfriend he actually looks pretty fat in those green basketball shorts he loves.

Not cool.

Thankfully, Lemondrop has this list of 10 things not to say to a guy during an argument.

No. 1? "I knew this was a mistake."

The list addresses some valid insults, but I'd love to see a woman write one telling men what not to say during a fight.

Maybe it doesn't even warrant a list. Guys, there's just one line that's the ultimate fight faux pas:

"Are you on your period?"