I think the most illegal thing I did was about 5-6 years ago. When I was about 14/15 me and my mates used to have sleep overs and we would always go out at 3am and have some fun. Usually the fun involved a bike ride, turps and something to light up
One night we took a bag of newspaper, string and a 500ml bottle of turps about 1/2 a mile from my mates house onto the beech. There we soaked the string in turps and wrapped it around some stone pillars and lit it.
Then we did the same to the newspaper. As we did this, 2 mobile CCTV vans were roaming around. We crapped ourselves, grabbed what we could and rode back towards my friends house.
On the way, the vans spotted us and chased us with blues and twos. We got to a part of the promenade with bollards on it so they couldn't get past!
About 500 yards after that, my mate ditched the turps and remaining newspaper and we just kept riding till we got home!
We split up about 300 yards from the house and went up different roads.
God my heart was thumping from that! We stayed in the rest of the morning after that incident.
Sorry about the story but I found it quite funny looking back on it.