1)old man looking to get in little girls pants...also has a blood fetish
2)what you call your doctor if he/she comes onto you
1) Guy: Why is that old guy talking to that four-year-old?
Other Guy: Oh that's Herbert, he's such a Dr. Crab. He's only talking to her because she's on her period.
2)Girl: My doctor kept touching my tits even when he didn't have to. What a Dr. Crab.