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1.
adj. Containing the ability to anger and/or annoy someone.

OR

adj. Describing a person who is easily angered and/or annoyed.
1.) My date stood me up again! How pissoffable!

2.) The chemistry test was very pissoffable! How dare the professor include material we hadn't gone over in lecture?!

3.) They say that new kid over there is extremely pissoffable...
by melikayay March 07, 2011
 
2.
Compound derivative from the words piss-off-able. Pertains to a person/s or situation that has the capacity to piss one off.
The Labour party are so pissoffable!
by Fast Parrot July 01, 2005