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The tendency of a person to kill every funny joke said in the presence of that person. Then they will try to laugh about it and pretend they did it on purpose, but they really didnt.

Known Cures:
1. Putting a bullet in their skull
2. Telling them to shut the FUCK up
3. Killing yourself so you dont have to hear their pathetic attempts at being funny
"what did u do last night?"-person
"your mom! hahahahaa"-person afflicted with Samitis
by Cockrates May 25, 2008
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2
The terrible condition of believing that one is completely infallible. A major symptom is negating arguments by repeating the phrase "You know I'm right, don't argue." People afflicted are often shunned by most of their acquaintances.
SAM: The sky is always green.

Person 1: No it's not.

SAM: You know I'm right, don't argue.

Person 1: You have Samitis.
by Ben4545 August 13, 2006
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3
A disease, whose symptoms involve breaking things or hurting ones self /others, by means of being over excited, over zealous, or clumsy
Don't let him on the trampoline, he's got Samitis, he'll have someone's eye out!
by SHJ January 21, 2008
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4
The terrible condition of believing that one is completely infallible. A major symptom is negating arguments by repeating the phrase "You know I'm right, don't argue." People afflicted are often shunned by most of their acquaintances.
SAM: The sky is always green.

Person 1: No it's not.

SAM: You know I'm right, don't argue.

Person 1: You have Samitis.
by Ben4545 August 13, 2006
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5
The condition in which a person finds themselves thinking about, missing, or daydreaming about a person with the names: Sam, Samuel, Samantha, Samson, etc.
She has really been talking about Sam quite often recently. I think she has a case of Samitis.
by daydreamer1975 September 25, 2017
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