Machine Gun Kelly is currently traveling the United States for his "Mainstream Sellout" Tour.

The most recent stop on the tour was in Omaha, Nebraska, and it turned bad, quickly.

According to TMZ, MGK's red tour bus was vandalized with spray-paint on both sides. 

On one side of the bus, they drew an ejaculating penis, and on the other side it said "Rap devil f*ggot."

MGK called himself the "rap devil" when he was beefing with Eminem.

All together, MGK has four buses on tour; one red, one yellow, one blue, and one green, but only the red tour bus was spray painted.