11 etiquette mistakes a modern gentleman never makes

AP/Matt Sayles

Etiquette is something of a lost art these days. But that doesn't mean there isn't a point to following the rules.

These are the rules that govern our everyday actions and stop us from looking like insensitive idiots. 

We've gathered up 12 of the most common mistakes we see on a daily basis, so you can learn from them.

From where to place your water glass at dinner to how to give a proper handshake, we've got you covered.

Never be seen as uncouth again.

Slapping on hair product before going to the barber.

If you know you're going to get your hair cut that day, refraining from slathering it in product that morning is barbershop etiquette 101. That will ensure an easier cut without your barber's hands getting all sticky and disgusting from an excess of product.

Your barber will be happy he doesn't have to tame a beast of product, and you'll be happy because you'll have the haircut you want.

Being obviously overdressed or underdressed.

Wearing a pair of jeans to an event you know has an upscale dress code is an affront to whoever invited you, everyone attending, and the establishment itself. The same goes for dressing up too much.

To understand what dress codes are and what they mean, consult our guide.

Not responding to an invite until the last minute.

Not responding until the last minute says, "I was waiting for something better to come up, but since there isn't anything, I guess I can go."