This person refuses to shower or use any type of product to cover up their unbearable stench, this person is highly stupid, childish and insufferable. If i were you, i would stay away from any Mairead you encounter. Their name by choice is Sam, or as i like to call it, Big Samuel.
Mairéad is a very loud, hearty girl with lots of personality and warmth for everyone. She excels academically and has a fond interest in the arts and humanities. Initially, she comes across as quite reserved and lost, but as soon as she opens her gob, you know that first impressions don't last!
'Did you see that Mairéad girl at Gwyenth's party?'
'Yeah she was hilarious. Didn't expect her to be so funny'
The act (usually performed by a female) of making your snapchat story obnoxiously long with the clear intent of showing that you have a social life and are therefore better than everyone else.
"Pull a Mairead"
Me: Dude, Sam pulled a Mairead again.
You: Ew, she needs to stop trying so hard.