Sit start on right side with your heel scummed in the crack. Move around the tongue using the large ledge at the lip of the tongue. Top out.
Also goes around V3ish if you skip the outer ledge at the tip of the tongue and just shoot straight under for the bomber hold.
This is one of the most climbed problems at South Mountain. It is the very distinct feature behind the warm up wall that is often described as: the lizard head, iguana head, alligator head or tongue. It sits about 3 or 4 feet off the ground and is a great low ball!