The band speak Spanish throughout the gig.

Likely the gig Roddy speaks about in Video Croissant where Patton takes a bottle of urine thrown on stage and pours it over his head.

Before Chinese Arithmetic intro Bill says there is a bottle of urine on stage and asks for the owner to come claim it.
During Chinese Arithmetic intro Patton yells "Pipi!! Pee!" - this may be where he pours the urine over his head.
After yelling "pipi" he asks "Jugo de naranja o jugo de manzana?" (Orange juice or apple juice?)"

Patton sings "Madonna and Mr. T" lyrics to We Care A Lot