A Melbourne man was so angry at his brother for peeing on his car and posting video of it on Facebook, he fired 53 bullets into his Xbox.

Rhys Holman was released on a 12-month good behaviour bond on Friday after pleading guilty to four charges, including damaging his teenage brother's Xbox with a firearm.

Melbourne Magistrates Court heard the half-brothers were "as thick as thieves" until the relationship soured, only made worse when the 16-year-old brother urinated on Holman's car on July 16 and uploaded a video of the event on Facebook.

Three days later, the 24-year-old Holman sought revenge by taking his brother's Xbox, valued at $500, to bushland and spraying 53 bullets into it.

"He admitted he did go a little overboard," defence barrister James Anderson said, prompting magistrate Tim Bourke to quip: "Some people would say it's a good thing, destroying an Xbox."