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1.
Annoyed, Wound up, Bad mood, Frustrated
Used in West Cornwall
"I knew she was on the blob because she was a teasy fart this morning"

"Those stupid Noddy-car adverts make me teasy as fuck"
by Cliff Spab September 05, 2003
 
2.
A woman/man who pretends to be easy, but whose pants are impossible to get into.
That chick at the bar was all over you, but she wouldn't let you take her home? That woman was teasy.
by JimmyHatt August 01, 2008