Geocachers know how good it feels to find a geocache, sign the log and leave the cache as unknown to the larger muggle world as they found it. There may be endorphins involved. Adrenalin definitely seems to play a role.
For me, bagging my first First To Find (FTF) (being the first to log a geocache after it’s been placed by the cache owner) last night for Tiny Toys – Nachos (GC2CV83N) felt a tiny bit like I imagine an adrenalin shot to the heart might feel. You know, like that scene from Pulp Fiction.