Crash and burn

I’m heading back to Edmonton this evening. Usually on Mondays I hold a movie night, a party to watch a movie. Since I am not there I have someone else running it. In other words they will be having a party at my place. I will probably be arriving home at some point in the evening which means I will be crashing the party.
S. thinks that “You can’t crash gatherings at your own house.” which I’m going to have to take as a dare.
In my head, the way to crash a party is to burst in, uninvited, and make yourself at home. That sounds really easy if it is your own home. (Is it my home? I have a squatter there right now.) But is that enough? It does sound like I’m not putting in enough effort. So I have to think of other ways to effectively crash a party.