Is pis toff a cusword?

if you mean pisi pisi it is a river but somebody tells his baby to sleep original pış pış

Absolutely! The Pis Pis River is in Nicaragua. It was named after the Pis Pis water weed which grows in it.

you need to mix potatos with dirt and dog hair

Rich or upper-class

Yes it's a word. It's the plural of "pi"