this abit different version...

one night an angel was flying around. She saw a guy is counting sheep at bed: "one, two, three, four, five, six, ..."

the angel removed his left brain, and the guy counts: "one, ..., three, ..., five, ..., ..."

then angel then return his left brain and removed his right brain, the guy counts: "..., two, ..., four, ..., six, ..."

finally the angel removed both brains and the guy counts: