ugg I hate the "I'm too little" excuse!!
My 3 1/2 yr old dcg is always saying this. Her parents baby her to the max and it is a definite link to her self-esteem and learning issues.

For example:
Walking up and down stairs, opening drawers or doors, wiping her own bum!! (JUST became potty trained at 3 yrs 5 months) everything she says "I cant, Im too little!". A little frustrating but I know where she gets it from!