Prosecutors say the boxer wrote a bad check from a Wells Fargo account for an Audemars Piguet watch on New Year’s Eve.

Boxer Floyd Mayweather Jr. attends the game between the Los Angeles Lakers and the Oklahoma City Thunder at Crypto.com Arena in Los Angeles, Calif., on Feb. 7, 2023. (Photo: Harry How/Getty Images)

 Alejandro Avila | Fox News

Floyd “Money” Mayweather built a fortune around his famous nickname. Now, he may have some explaining to do.

The undefeated boxing icon is facing serious prison time after allegedly writing a bad check for a luxury timepiece in Las Vegas.

Clark County prosecutors slapped the 49-year-old fighter with two serious felony charges, including theft of property valued over $100,000 and passing a check with intent to defraud.

Authorities say Mayweather’s alleged theft stems from a shopping trip on New Year’s Eve in 2024 when he set his sights on a rare Audemars Piguet watch.

Mayweather paid with a $200,000 check from a Wells Fargo account, but the bank quickly returned it for insufficient funds.

Boutique owners reportedly spent over a year trying to collect the cash quietly.

They even sent a certified demand letter to avoid a public scandal, but Mayweather allegedly ghosted them.

A criminal summons followed, and Mayweather’s defense team appeared on his behalf in a Las Vegas court on Monday.

If convicted on both felony counts, the self-proclaimed billionaire faces a maximum of 24 years behind bars.

This $200,000 bad check appears to be just the tip of a massive financial iceberg.

Mayweather is currently buried under a mountain of debt, including a staggering $7 million federal tax lien from the IRS for unpaid back taxes.

A judge also recently ordered him to pay $1 million in back child support to a former dancer, and he is battling separate civil lawsuits over unpaid bills for private jet services and luxury Manhattan apartment rent.

The aging star has quickly lined up a string of upcoming exhibition bouts, alongside a highly anticipated September rematch against Manny Pacquiao.

Mayweather is game to fight anyone except the repo man.