Top Definition
A totally awesome nickname for a boyfriend or girlfriend, used when referring to someone who is very baby-like

Sometimes a buttface, but mostly an adorable cute hottie who is the best boyfriend in the world
Hi cutie bubbu! How are you my bubbu!
by cutie, hottie, May 11, 2011
The sweetest little cuddly wuddly creature that glows when it meets another of its kind.
Shreya is a bubbu, she knows how to treat her bubbu right!

They love each other so much, just like a perfect pair of Bubbus.
by AlphaQ2n8 July 27, 2013

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