Two guys were sparring in the park. They had a sort of sempai/kohai relationship: one was professing and the other was appreciating. Sempai was laying out some concepts; then they'd throw a few blows and recap. The sun was setting and there was a light cool wind; the very tops of the houses were reddish from the sunset. Here's what was overheard:

Jose was talking about his time in the military and some hand-to-hand combat shit...

When you're all up in a street voice, and you also want to show you know the official names of things, you've got a problem. The solution? Append shit to the name. Then no one will think you're some parrot of official jargon.