His shirt says "I love my Mummy", corney but cute.
I cut off the beginning...he's singing "Trick or treat, smell my feet, gimme something good to eat...not too big, not too small...just the size of Montreal. If you don't...I don't care...I'll pull down your underwear! (Lyrics courtesy of Romy)
We got back from trick-or-treating and Hudson dumped his candy out on the floor, stared at all his loot, and said "THIS IS WONDERFUL!". He sounded so sincere.