The act of a person urinating into their own mouth whilst standing upright
This act resembles drinking from a drinking fountain or more appropriately a bubbler
"George had to clean up all that piss on the carpet because he gave himself a bublay in the lounge room last night"
"one of you.... will watch me do a bublay"
Pronounced "Boo-blay," as in the singer Michael Buble, it means to trick or punk a person.
"I had planned a barbecue for a few friends. But the rain bublayed me."
"I'm going to bublay Mike this year for April Fool's day by leaving a cake with black frosting outside his front door."