Meaning of “show out” (intransitive form, NOT show someone out)

In a video about undercover police work, the expression to “show out” comes back twice:

No wonder he got shot, to be honest. Mind you he showed out, didn’t he? Golden rule. [3:46]

You never break cover. The golden rule is you never show out. [10:43]

I’m pretty sure I’ve never seen this used without a complement (e.g. I’ve seen “show someone out” but this is visibly different). I’m not sure I understand it fully, is it just synonymous with breaking cover? Is it a colloquial way of saying “showing your hand”? Am I missing some subtlety? The speaker is English, if that’s relevant.

Any dictionary I’ve consulted only mentions the transitive form, i.e. show [sb] out:

• wordreference
• Cambridge dictionary
• Merriam Webster

Just to name a few. This question also did not appear elsewhere in the English SE nor the English Language Learners SE.

Solution 1:

show out (v.)

(intransitive, colloquial, informal, slang) To display or present oneself; represent. Wiktionary

To present oneself, especially in a public or performative manner.
The pop star always shows out with incredibly extravagant, often outrageous, outfits.

To perform some task with as much energy, enthusiasm, and determination as possible. It's going to be tough to win today's game, but if we all show out, we can accomplish anything! Farlex Dictionary of Idioms

intransitive. To become visible, discernible, or apparent; to be revealed. Now somewhat rare. In early use also: to project, stick out.

A little later the flicker of their camp-fire showed out.

intransitive. Originally and chiefly U.S. regional (southern and south Midland). = to show off. OED

He should have trusted his Star Wars-style instinct and his eyes and ears on the three occasions his surveillance team has, in the parlance, 'showed out'—the times when he has spotted or 'got on to' the fact that he was being tracked and watched. Graham Johnson; Druglord

We couldn't park too close to the gates without showing out, which made identifying container numbers as they left the facility impossible. Harry Ferguson; Kilo 17

The rabbits, too, were showing out among the grass, scuttling about busily. Henry Kingsley; Ravenshoe

The two of us got on that dance floor and showed out. Our dance moves were off the chart, and people started clapping for us and moved off. Jeanette Tyson; Shhhhh...Don't Tell.....

"Mama, you need to whip that boy" He needs a good whippin'! You should have seen how he carried on and showed out and pestered me! Claude Eubanks; Bully in the Pulpit

Of course he didn't tell anyone, but he fumbled around at dinner and spilled food on his clothes and blubbered when asked anything. It was like he went into a stupor. Alex and Tom laughed at John and thought he was just showing out and left it at that. T. Burns and D. Burns; The Young Scots

"Nobody said anything about being undercover, I just don't feel the need to show out. I'm not all about trying to get someone's attention..." J.B.M. Patrick; Angelos Odyssey