Watch Stephen Colbert School Nelly on Tax Law With 'Debt in Herre'

James Corden introduces button that plays "Hot in Herre" to assist IRS-embattled rapper

Stephen Colbert and James Corden both offered up some financial help and fiscal responsibility tips to Nelly, who owes the IRS $2.4 million.

The CBS late-night tandem of Stephen Colbert and James Corden joined the fight to help Nelly after news broke that the rapper had been hit with a $2.4 million tax lien.

Both hosts honored the efforts of Nelly fans, who launched a campaign to help the embattled rapper after calculating that he would be able to pay off the IRS if his 2002 hit "Hot in Herre" were streamed over 280 million times on Spotify. Colbert also suggested using the song in a popular viral clip, wickedly placing the song over footage of an overheated, pneumonia-stricken Hillary Clinton trying get into a car.

But the Late Show host used the $2.4 million tax lien as a teachable moment, too. Colbert flipped "Hot in Herre" into "Debt in Herre," a detailed instructional banger about tax law that featured such scorching bars as "Shoulda used a bank in Geneva/ Write offs! Loopholes!/ Shoulda Believed-in," and boasted the earworm hook, "You wear them at your work/ So write off all your clothes."

Meanwhile on The Late Late Show, Corden did what he could to support the #SaveNelly effort in his own small way. The host recalled his recent birthday gift — a button that plays Montell Jordan's "This Is How We Do It" — as well as the subsequent warning he received from producers that the show gets billed $6,000 every time he hits it.

So I thought tonight, for one night only, let's help Nelly out," Corden suggested, revealing a new button. "I think we've worked out he'll get about 20 cents from this, so you might be hearing it a lot. But I don't know, is it me or is something wrong with the air?" Corden continued, fanning himself with his cue cards, drawing out the introduction before finally pressing his brand new "Hot in Herre" button.