jeff:hey bob have you heard of that bitch woah Vickey?
bob: yeah shes mentally black!
jeff: yeah so fucking gay right!
bob: yeah shes mentally black!
jeff: yeah so fucking gay right!
by autistmydude June 8, 2018

When somebody hears something and believes it to be fact even though it is just hearsay, and splits off into a new herd of sheeple.
Susan whispers to the new secretary Gina, "Here comes Jimmy. Don't give him any attention because he has 'Heard Mentality' and will go on and on if he thinks you believe him."
Jimmy "Hi Gina I'm Jimmy. Say, have you heard about the ____(conspiracy_of_the_day)____? This video is evidence it's true. You have to watch the whole thing though and they splain it all!. It's only 59 minutes long."
Jimmy "Hi Gina I'm Jimmy. Say, have you heard about the ____(conspiracy_of_the_day)____? This video is evidence it's true. You have to watch the whole thing though and they splain it all!. It's only 59 minutes long."
by mayfieldenator February 10, 2021

by r+t March 21, 2021

John: Do Celebrity's Have Surnames ?
Like Madonna
Maria: What Do You Think Asshole, Are You Mentally Disorganised Or Something. KMT
Like Madonna
Maria: What Do You Think Asshole, Are You Mentally Disorganised Or Something. KMT
by nadiiYA. April 5, 2009

by Skiskyy November 5, 2017

A cute girl u think is normal and hook up with only to realize she is screwed up in the head. they are virtually undetectable at first glance. Red flags include; talking about her father when she is naked, weird fetishes, asking what number personality you are, if she tells you she is psychic or compares her psychic abilities to others, etc . no matter how hot she maybe be aware of the possible mental landmine that can/will ruin a perfectly good hook up.
A: I just hooked up with Halley
B: Good Shit she was cute.
A: Nah, she started crying about her body issues and her horoscope halfway through sex. Totally ruined it for me.
B: now that's a Mental Landmine
B: Good Shit she was cute.
A: Nah, she started crying about her body issues and her horoscope halfway through sex. Totally ruined it for me.
B: now that's a Mental Landmine
by juan the don October 6, 2010

by Candles18 July 9, 2011
