Dawson Casting: Peter Bark as Michael is a weird example of this trope. Michael is meant to be a child, probably around ten years old. Peter Bark was about 25 years old when this movie was shot (according to his page at IMDb). This is sometimes exaggerated; Wikipedia reports him as having been middle aged. Either way, he's an older dwarf with a bad wig playing a child.
Alternate Character Interpretation:What if Michael really did not love his mother as said by many in a incestuous way but in the normal way.He is a mentall challenged boy.He must have thought that boys breastfeeds even in their pre-teens.He should've thought that rubbing the crotch is the way to express love to any woman.Even if she's your own mother.