The first North American leg of Slayer‘s farewell tour came to a close last night, June 20th, in Austin, TX. Behemoth were on the bill for that trek and took part in the age-old tradition of pulling an end of tour prank. Below you can see what is presumably members of the band/crew take to the stage as dancing lambs during the set of Lamb Of God, who were direct support to Slayer on the bill. Behemoth frontman Nergal shared the footage.