Twittisism 

A Tweet wherein you criticize someone or something.

I didn't appreciate that Twittisism about my new video blog.

Twittisism by Marie Northgate March 11, 2011

Twitticiser 

someone who has a twitter account, yet believe themselves to be too boring to post regular updates while still managing to criticize everyone else on their lack of twitter activity.

Guy 1: you have twitter but never use it...what a waste of time!
Guy2: neither do you, so cut the shit and stop being a Twitticiser.
Guy 1: you make a valid point, i now see right from wrong.

Twitticiser by stewkerr April 13, 2011

twatticism 

A remark by a twat.

That sounded a bit like a twatticism.

twatticism by hwojciechowski June 19, 2011

twitticism 

An idiotic remark uttered by a twit who mistakenly believes he/she is being witty

Bill let loose with a string of twitticisms that proved he is a master of masturbatory thought, not an intellectual.

twitticism by deli-cut June 16, 2004

Titticism

A witty remark that has slightly twatish undertones

Used in the same way as witticism - "Dude that was such a titticism"

Titticism by custardcream555 February 25, 2011

twitticism 

Criticism of another person or group through tweets, on Twitter.

When the liberal tweeted his opinion on the issue, the fire-breathing conservative responded with harsh and typo-filled twitticism.

twitticism by HE AIN'T GONNA EMAIL YOU March 30, 2011

twitterism 

Deep insights about life in 140 chars or less. Stems from the microblogging service Twitter that allows posts of up to 140 characters. Coined in a tweet on May 7, 2007.

Subjective idealism twitterism: "If a tree falls in the forest and noone is there to Twitter about it, did it really happen at all?"
Sacred Emily's twitterism: "A twitterism is a twitterism is a twitterism"
Descartes' twitterism: "I twitter, therefore I am"

twitterism by Jens Roland May 30, 2008