How do you check your jargon/technobabble when trying to talk to others about something you're very into?

I generally just staart saying what I want to say, no matter how it comes out. Then at any point where I'm not sure of the correct word, I just say that I'm not sure, and then wave and flail about in gestures and interpretive dance that signals to people that I am looking for clarification before I can continue.