Top Definition
An unnecessary correction or explanation usually causing annoyance to the listener.

Moistism is derived from the term wet blanket. One may moisten a conversation if they choose to add a moistism to a social conversation.
1.

Person A: "There was like 100 people there last night".

Person B: Actually it was only 96.

2.
Person A: Wales is one of my favourite countries.

Person B: Actually Wales is part of the UK or Great Britain and is not recognised as a country in it's own right.

3.

Person A: I found out I have AIDS and it's going to kill me.

Person B: Actually AIDS doesn't kill you it attacks your immune system making you more susceptible to colds and virus'. It's actually those that kill you.

Person B: F*** you.
by Antopoly Oburnass February 17, 2011

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