piss on party

piss on somebody's party

(British & Australian very informal)

to do something that spoils someone's plans I don't want to piss on your party but next week Malc and I won't be here.

Name	Pronounced	Usage
Lleu	LAY	Welsh Mythology
Natalie	nat-a-LEE (French), NAT-ə-lee (English), NAH-tah-lee (German)	French, English, German
Micheil	-	Scottish
Norene	nawr-EEN	Irish, English
Hay	[hei]
Teuna	TUU-nah	Dutch