An off the top of my head list of jobs that no one told me about when I was in college:
- Life Coach
- Image Consultant
- Afflilate Marketer
- Blogger
- Hoarding Expert
- Online Teacher
- Vertical Farmer
- Mystery Shopper
- Flatulence smell-reduction underwear maker
- Beer Tester (I can understand why they kept this one a secret in college)
Feel free to make further suggestions.