1 definition by Flynno

Top Definition
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"

and

"one of you.... will watch me do a bublay"
by Flynno December 13, 2009

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