You always make me do things your way.  You never let me do it alone.  I know what I'm doing, I've done this before.  You have to trust me. "I would trust you, but these chemicals are dangerous.  If anything goes wrong, I'm responsible.  I just can't risk having anything happen to you." "But I keep telling you, nothing is going to happen!" "Okay, I won't say a thing.  But I am going to watch, just in case." "Fine.  I'll just put a little of this green stuff with this red stuff.  Whoa!  Bubbles.  Cool.  Now I'll mix my new liquid with this blueish colored water--" "No!  Don't--" (KABLOOM) "You should've told me not to mess with the blue stuff.  These chemicals are dangerous.  What kind of monster are you?  Next time, let me know when I'm about to do something crazy!"
