1. Have you ever masturbated on a train?
yes
2. Have you tried to hide a bulge/wet panties in public?
yes
3. Sitting in a train, bus, or similar: have you ever been fantazising about your fellow passengers?
yes
4. Have you ever gone commando in public?
yes
5. Did you ever give/receive a handjob in a car?
yes
6. Did you ever give/receice oral sex in a car?
yes
7. Have you ever had someone's hand in your underwear in a public place?
yes
8. Have you had sex on a beach?
yes
9. Did you try something sexual in a swimming pool? What?
yes, handjob, blowjob and anal sex
10. Do you ever look at a complete stranger in the street and think about when they possibly had sex?
yes
11. Does doing sexual stuff in public turn you on?
yes
12. When sunbating in the summer, do you ever place yourself in such a way that those closeby can see a little more?
yes
13. Have you ever had sex at a disco/nightclub?
yes
14. Have you had sex in a tent with other tents closeby?
yes
15. Have you gone skinny dipping?
yes
16. Have you ever seen someone else masturbating in a public place?
yes
17. Have your friends told you about their public adventures?
yes
18. Have you heard/seen your neighbours having sex?
yes
19. Have you tried filming or taking pictures of yourself or others doing something sexual in public? If yes, where was it?
yes, multiple locations 
20. After answering these questions, have you gotten inspired to go out and try something? What?
already done everything in the list