the practice of buying tickets to a movie at a multiplex movie theatre and staying for additional films at no extra charge.

To movie hop is to buy 1 ticket to the first movie and after taht first movie is done you sneak into other movies without paying.

To be a bad person at the theater and watch movies you didn't pay for by sneaking in.

Usually you'd pay for the first movie and hop whatever else.

I remember saying this back in 1998. I started this because I was tired of explaining to people my movie hopping strategy.