You: 'Hey, wanna help me hide a body?' Them: 'Sure, I'm your friend.' You: 'Great, we're gonna be best friends forever.'

You throw a body in the lake. Your friend just says, 'That's what friends do.'

You: 'You're my friend, so you have to help me hide the body.' Them: 'Okay, I guess.' You: 'You're my friend.'