Don't take these things out with you

Based on a conversation we had in the pub at lunchtime, here is a list of things that it is potentially not a good idea to take on a first date with a girl:

1. A duvet
2. Clean sheets
3. Your mum
4. Your girlfriend
5. A lingering odour
6. Surveillance photos
7. Your spare set of false teeth
8. A Ladyshave
9. The local under-17s rugby team
10. The Isle of Man
11. A ladder
12. Musical prophylactics
13. Handcuffs and/or manacles
14. The pickled body of a dead relative
15. Coroner's reports of your last four girlfriends
16. A detailed gynaecological map
17. Your parole officer
18. Herpes
19. Harpies
20. A platter of processed cheese

There are more, but I forget them. Any ideas?