I found out last night... Jill does it.
We were chatting about school, how he has not really been listening in class and how he knew his teacher would probably be calling home (btw... he used way more words to tell me what I just wrote with a lot of "would you just tell me all ready" from me lol) He talked about how after Jill tied his shoes...
me: Wait? What?
Goofy: Jill tied my shoes
me: Jill ties your shoes?
me: Jill ties YOUR shoes?
Goofy: (looks at floor (or shoes) sheepishly)
Goofy will be learning how to tie his shoes this week.