Stewart says Chastain fell off a cliff … of leukemia
Manti Te'o isn't the only one with an imaginary girlfriend.
"My girlfriend totally exists," said Stewart, mocking the fake-dead- girlfriend troubles of Notre Dame linebacker Manti Te'o. "She's going through a tough time — she died."
With a slight grimace, Stewart added: "And then also fell off a cliff … of leukemia."
Watch the whole clip below: