I'll drink your Kool-Aid
You're so loyal that you'll drink whatever your friend serves you, even if it's the last thing you ever do.
I'll drink your Kool-Aid. I'll even drink it with my eyes closed.
I'll drink your Kool-Aid. I'm loyal. I don't care if it's poisoned.
I'll drink your Kool-Aid. I'll probably die. But I'm still loyal.