The battle rap scene has taken the U.S. by storm and now London kids are getting into it. In a hilarious video that has gone viral, British high schoolers engaged in a crude but fun playground battle rap contest.

In the clip, students from St. Mary Redcliffe and Temple School are spitting lyrical barbs at each other that would make Eminem blush.

"Your mom calls me the rhino, she makes me horny, now we are in the bed making a porny," raps one high schooler. Another students spits, "I'm an expert at rapping, my bars are sick, as we learn from yesterday, you have a small d---." Ouch!

Unfortunately, the students rap battle contest was rudely interrupted by an administrator who wasn't amused by the boys' extra-curricular activities.

Overall, these London high-schoolers could probably teach some of today's top battle rappers how to spit clever put-downs. We're just saying.

Watch the video above. Class is in session.