“Drink Prime!” KSI was heard shouting in footage shared on social media. But instead of glugging the energy drink on command, those gathered began to throw it — forcing the YouTubers to retreat.The pair initially laughed, until Londoner KSI was hit in the face with a bottle.“That Prime bottle to my head was pinpoint,” the 30-year-old later wrote on his social media.Both men appeared ok after the incident and lived to fight another day.