Remember when Lil Pump was a thing?

Yeah, that happened.

It turns out the self-proclaimed Harvard drop out made some serious coin during his halcyon Gucci Gang days.

Now he's getting the tax bill.

Pump, now 21, has not paid the IRS the $1.6 million he owes them for 2018.

So Uncle Sam has filed a lien against his $5 million Miami mansion and will begin taking his things if he doesn't pay up.

In addition, American Express is suing Pump to recover the 26K he owes on his AMEX card.

A relatively recent photo of Pump suggested he may be switching genders. Perhaps that's to hide from his creditors.