LMFAO I'm glad I'm not the only one who has these odd compulsions, I thought I was turning mental as it's only just started happening recently.
Just today I was sat at the bus stop and I thought 'what if I just started wanking?'.
On topic, it's more things that make my skin crawl than scary but:
- Sponges (as Tom said, hate touching them)
- Fork being scraped directly across a plate, bowl etc. I get really annoyed if I see/hear someone doing this.
- Very squeemish with eyes too. Hate the things. I always get these visions of like me sticking a pin in my eye or something and I hate it.