by Twenty-five

1. Wear a cock ring for twenty-four hours continuously
2. Stay out overnight without a tent above 1000m on a mountain with a mate
3. Jack off on a pair of new boots at the end of the first full day of wearing them
4. Hitch-hike for a month; Inter-rail for a month with a mate and a tent
5. Spend one weekend as a sex slave and the following weekend be accused of being kinky when requesting a vanilla sex mate to use olive oil as an anal lubricant
6. Confess to passing on crabs
7. Take a #1 skinhead crop
8. Fire a rifle on a CCF range
9. Legally ride a motorbike at more than a ton on an autobahn
10. Learn and use the techniques of escaping from a strait-jacket and picking handcuffs behind the back

by Thirty-one

1. Accept a Master's orders to wear a butt-plug for twenty-four hours continuously and wear a male chastity device for a week
2. Appear naked and chained on an SM magazine cover
3. Wrestle a stranger: winner takes the looser
4. Enjoy a Blind Date in a foreign country in a foreign language
5. Accept a permanent body modification - Prince Albert
6. Spend a night in a strait-jacket
7. Stay in a barracks overnight (but only in the guest accommodation)
8. Be interrogated for real
9. Learn to march, stand and to bull boots for inspection the army way
10. Take a serious caning without crying

by Forty-one

1. Go drinking with serving soldiers of a foreign country's army wearing the same uniform as them
2. Organise gay military training at the bunker
3. Resist an interrogation during PoW training (prisoner of war)
4. Spend a night in a jail cell, spend a night in a wooden box 1m x 1m x 1m
5. Endure sixty hours hooded, no eye holes, fed only on pizza
6. Backpack hike New Zealand and the Rockies above 4000m
7. Hike naked
8. Wear a black skin-tight latex rubber one-piece suit on the streets of Amsterdam on the way to and from a New Year's Eve sex party
9. Wear a Japanese (Hojojutsu - Nawa Shibari) rope harness for a week
10. Take a serious whipping and cry afterwards

Still not done and no regrets either

1. Jump with a parachute out of a perfectly serviceable aircraft
2. Apply to join the French Foreign Legion
3. Gunsex - sex with a loaded gun
4. Fight as a Roman gladiator in a historic arena