I love your 'joey' story, but it is definitely not just your Yorkie.
Brody and Mia both have all kinds of weirdnesses...too many to list, but yeah, Mia covers food, 'sings' (howls) and is teaching Brody, who now 'sings with her...my Yorkie-Poo 'sang' too...Brody likes to cuddle in your clothes and Mia, too, but is not as insistent about it. Brody also buries himself behind pillows and under blankets...both 'fluff' bed covers and especially love fleece. Brody is incredibly toy centric and very neat with his toys, even picking them up and putting them away in one of his two (2) 'toy boxes'...our bed or the love seat...and he knows which lives where. They both choose their clothes, Mia 'teases' Brody...just to get him going. Brody wants to be carried out to potty and Mia is picking that up, too...not all the time but they like the view and 'sniffing' height. Brody, however, 'guides' me to where he wants his feet to touch down...or rather he throws a paw against my chest and/or neck/face and spins his head around to look at me like "Here? NO!!! Are ya crazy?" until HE finds an acceptable spot in the yard. If I try to put him down where he doesn't want to be, he 'air climbs' backwards trying to get back up before the feet touch. Both Brody and Mia 'help' me pick them up by 'launching' themselves up as I start picking them up. I could go on...