Obviously, marriage equality and Kendrick Lamar aren't the only things that Macklemore feels passionate about. 

The rapper posted an Instagram video that put a musical twist on bathroom etiquette along with the message: 

"ITS TIME THAT US MEN STARTED RESPECTING TO THE BASIN THAT OUR QUEENS SIT ON! LETS RAISE THE NEXT GENERATION TO HAVE BETTER AIM SO WOMEN DONT HAVE TO PEE & POOP ON OUR PEE!...and IM NOT TRYING TO POOP ON YOUR PEE EITHER! BASICALLY, TO ALL THE FRAT GUYS AND S****Y DADS, QUIT F****** UP THE DEUCE SESH FOR THE REST OF US! BUMP THIS CUT IN ALL AIRPORT BATHROOMS AND FOOTBALL GAMES! FUCK A DRUNK DAD PISSING ON THE GROUND, AND A FRAT BRO TOO HAMMERED TO HANDLE HIS DANGLER! MAN UP AND LEARN DONG CONTROL!...IM OUT!!!"

Does he make a good point or is this just plain gross?