In my opinion I wouldn't focus on coming up with something catchy. I would focus on something that's searchable.
For example, let's say you've got a video on the getting the same advice from multiple friends or something.
Catchy title would be.
Deja Moo. You've heard this bull before.
It's funny but it doesn't help YouTube send traffic to your vlog. A much better title all through not as catchy would be.
10 advice tips, that make you a better life hacker... or do they?
You've put some keywords that are relevant to the video in the title - Advice Tips, and Life Hacker.
You're more likely to show up in search.