...He travels the multiverse with the Star Sanses, stealing the jackets of every single AU Sans there is.

Stealing Error's jacket was pretty risky.

He had to be quick about it, and the universe may or may not have crashed temporarily as Error had an anger outburst.

Stealing Cross's jacket was a rather interesting sight to see.

He had to wait until he was asleep, and he had to take off all the extra stuff on Cross's outfit before he could snatch his floof.

...

At the end of all this, Stretch couldn't even go in the house because of Blue's extensive hoard of jackets and hoodies.