Perhaps Floyd Mayweather has gotten the last laugh against 50 Cent.

The boxer's Showtime promo video for a Sept. 13 pay-per-view rematch against Marcos Maidana features a song from 50's mentor Eminem.

"Guts Over Fear" was revealed in late August in the trailer for Denzel Washington's film The Equalizer, and kicked off a massive marketing campaign for Shady Records' 15th anniversary release, Shady XV, coming in November.

While Showtime's use of the song makes sense (the title has "jock jam" written all over it), it's even more notable thanks to the superbeef that Mayweather and 50 have created over the past month.

The pair's social media squabble has been non-stop since 50 decided to run Floyd through the ringer for reasons officially unknown. Making fun of Mayweather's supposed illiteracy, 50 challenged him to read childrens' books on live television multiple times.

After the Internet took that and ran with it (one radio station even provided evidence of Mayweather's reading problems), the boxer fought back with mathematics and directed 50 images of two humongous checks.

From there, they kept on barking without showing much bite. Now, Floyd apparently has Eminem on his side.

You know who's not on Floyd's side? T.I.

The Atlanta rapper recently unleashed his "Am I Wrong?" remix, which takes shots at the world's No. 1 boxer.

Upset by a May incident in which his wife, Tiny, took a picture with Mayweather, Tip let loose:

"Sucka, if I got a woman and you touch her / She supposed to stay with you if you a bad motherf----r / She come back to me / As far as I can see / You all she really needed to see what she wanna be."

See More Eminem
Join the Discussion