A word to make you sound like you know what you're talking about when you're stuck in the middle of a conversation that you know nothing about. It also could be used as an excuse to get out of something or to cover up a mistake, i.e not calling your mom or girlfriend when you were supposed to.
Guy One: Yeah, the front suspension on my truck is jacked up. I gotta go have the tork adjusted and see if that does anything.
Guy Two: Maybe you just need to look at your BB247 Valve?
Girlfriend: Why didn't you call me last night? I thought we were going out.
Guy: Ohhhh, sorry honey I was working on my BB247 Valve and didn't even hear the phone ringing.