Christopher Columbusing
When you use your hands to touch another person sexually after they are sleeping. Or when you use your hands to touch someone sexually for the first time.
Last night I told my wife that I was going to go Christopher Columbusing on her while she slept.
Christopher Columbused
To stumble upon someone's property and taking it without permission.
"I stumbled upon someone's property and I Christopher Columbused it".