Etymology: Sergei Bubka, the Ukrainian world record holder in the Pole Vault was known for breaking his own world record over a dozen times by just one centimeter at a time -- even though most experts believed he could have gone over 5 or 10 cm higher. His motivation each time he did it by 1 cm was that he got a US$1 million bonus from his sponsor NIKE.
The term now can be used as a verb or noun.
1. Bubka: to break one's own record by the smallest increment in order to ensure that one can do it again and again.
past tense: Bubkaed
present continuous tense: Bubkaing
She looks like she is going to Bubka her own record each week for the remainder of the season.
He clearly is Bubkaing the record for more bonus money each month.
She Bubkaed the world record again.