simple past tense and past participle of piss
"The dog pissed on the rug before I could stop him."
In plain English: To piss means to urinate, which is when your body gets rid of liquid waste through urine.
"The dog started to piss on his own rug while he was away from home."
aroused to impatience or anger
"made an irritated gesture"
"feeling nettled from the constant teasing"
"peeved about being left out"
"felt really pissed at her snootiness"
"riled no end by his lies"
"roiled by the delay"
Drunk.
"After too much beer at the party, he was so pissed that he started singing off-key in the kitchen."
The word comes from Middle English and originally meant having urinated. It is formed by adding the past tense suffix "-ed" to the verb "piss."