Do you ever make up names for people you don't know?

Yeah. Sometimes it's a name that they look like, and sometimes it's a name from a description. Like last year, there were two people in my school I saw a lot. One always wore camouflage, so I called him Cam (he also looked like a Cam). I always thought "Cam and his friend" when I saw them. "And his friend" eventually became Annie.

I have Jogger Dude. For 15 years he's jogged past my house with a dog or two or we've run into each other on the trail. He always smiles and waves. Nice guy.

I yell random names at people I don't know trying to guess their names

Hello, Dirt Devil

Yes I do little ducky!

Yep. We learnt some difficult terms in our syllabus by naming all the guys after them. XD