Bertstrips - Ernie is a liar.

Grover: take the shot sir.
Ernie: [deep breath]…Wait for him to come out.
Grover: sure he’s gonna fall for it.
Ernie: Of course…I told him you and Oscar were taken care of…he believed me. [In head] goodbye old friend, this is what happens when you take the lifes of others. [Bert comes out] take him now
[que gif]

Damn it Ernie you had ONE job