mental boat 

When you're high. You may often sing rap songs.

"I'm on a boat!"

"This mental boat is fucking awesome!"

mental boat by boats boats boats September 18, 2009

Mental Fluffer 

A person who gets you mentally "steeled up" to go have sex with another person.

"But I dont know if she wants me to make a move"

"Just go make your move."

"But what should I do?"

"Look take your chances, I can't be your mental fluffer"

OR

Mike: "I really like her, but won't make a move unless I'm certain."
Anne: "Well there's no 'sure thing' but you'll never know if you don't try."
Mike: "You think it's worth a try?"
Anne: "Look man, all I know is that she's hot, you're horny and if you don't make a move you'll never be able to tap that ass!"(mental fluffing)
Mike: "You're right. I'm on it!"

Mental Fluffer by Red Shiksa October 6, 2011

Mental Baby 

Someone that has the appearance of a crack head, or who has been taking meth. Their face is all messed up and their hair is like a bird's nest. Also, if the person is acting like a stupid dumbass or doesn't understand what you're saying.

Someone that looks like they've been dropped on the head.

She's acting like a mental baby! I wanna punch her in the face!

Ewww, look at her head! It looks deformed!

Mental Baby by fuckyeahitsanne October 23, 2011

mental insult 

When you or someone else insults someone in their head

Can be used while also saying something nice outloud

Timmy: Hey buddy I got the iphone 6+

Tommy: (thinking) why don't you shut the fuck up u faggot I'm bout to slap the tiny dick off you

Tommy: (saying) oh that's cool Timmy

Timmy: (thinking) the fuck did u just mental insult me u retarded meatball

mental insult by Oibun Dikshunaree October 28, 2014

mental russian roulette

Taking chances that will most likely end negatively, but being hopeful of the best possible outcome

Asking a girl out is like a game of mental Russian Roulette

mental russian roulette by FML( -_-) March 28, 2016

Mental Rash 

The raw mental state created from repeated exposure to unfavorable conditions, as often happens when you dislike your job.
Also, the unfavorable condition itself that causes such a state.

I'm so glad I quit my job today, it's been leaving me with a severe mental rash.
or
I hate my job so much. It's nothing but a mental rash

Mental Rash by Dave-Landon October 23, 2016

Mental Voice 

It is the voice that speaks the words in an individual's mind as they read or thinks.

The URL box in the browser makes some peoples mental voice overactive and problematic.

Mental Voice by Jamesthehawk October 26, 2016