Having a mare 

Having a nightmare. Being in a bad/awkward situation.

"I got fired in work then crashed into the back of someone when I was driving home. I've just been having a mare"

Having a mare by supernovabelterchild July 10, 2009

Having a mare 

Having a nightmare but in the day, so it's just a mare since it's in the day.

Basically, another way of saying you're having a living nightmare, ie you're in a really shitty situation.

Today's been AWFUL. I thought my English Literature exam was in the afternoon, but it was actually in the morning. I missed the exam, and now I've been told I've been held back. It's like all my exam-anxiety nightmares came true! I'm truly having a mare!

Having a mare by Lefty Power 123 September 6, 2018

having a mare 

Messing up your hair, sometimes until it's big and fluffy Generally more for guys than girls

*runs hands through hair rapidly*
"I'm having a mare!"

having a mare by Fifihasherlife January 4, 2008

havin a mare 

Phrase. Short for "Having a nightmare".

Often used when things have gone completely tits up and you have no control over what the fuck is going on.

Small "mares" are usually caused by physics practicals, but larger ones are usually due to women.

The Ultimate Mare: Going out with a fit girl for two years, splitting up while living with her, sleeping with her friend, sleeping with ex again a few weeks later, pulling another of your ex's friends a few weeks after, then telling your ex the gory details including the fact that you did not play it safe with either and that she may now have got de baad AIDS.

havin a mare by MofoLoadOShit February 4, 2005