The craziest thing you've ever done

Like the title say, what was the craziest thing you've ever done?? Explain why

The craziest thing I've ever done was explore a big tunnel with my friends. It full of giant spiders and what one of my friends suspected, bats. We didn't know what was in the tunnel the first time we tried to go in, but everyone was afraid, so we stayed there looking at the tunnel. In the end we went in out of curiosity, it was awesome. The tunnel is close to a small church with a metal gate that is locked. Both of them are in private property(an abandoned house with armed guards and dogs, sometimes they go to check the church. I'm sure they are very angry now) Last week we destroyed the gate and there was a tunnel inside, one of these days we are going to go in the tunnel until we can't go any further.
We definitely have at least one similar topic already.