A Cruise is someone that has a severe case of diarrhea all the time. It means that the diarrhea is "cruising" around in their pants. People said it all the time in my middle school, and they even say it in my daughters school.
They're awesome and active people. They like to be adventurous and is good at many things. They are talented and make friends easily. They are good with ladies and they have a big penis.
The act of travelling around the world to see places you've never been before and make memories. Especially when you walk around a town and get lost on purpose to see the roads and life as a local.