Louie's problem is that he let it go too long. With dealing with disruptive people, my philosophy is to QUICKLY Acknowledge -> Divert -> Ignore -> Impair [if needed]
In this situation, what Louie could've done is 1) looked the kid and friends in the eye to let them know he's aware of them, 2) turned the kid's words against him and made fun of him, 3) after that, told him to fuck off and 4) [if needed] told him "Hey, come here...", grabbed his head as if to confide something with him and smashed his face on the table.
Something I've learned (especially in fighting) is that you don't give your enemies that chance to fight back. Impair them to the best of your abilities ( break their faces, bones, etc.) and get the fuck out of there.
In this situation, what Louie could've done is 1) looked the kid and friends in the eye to let them know he's aware of them, 2) turned the kid's words against him and made fun of him, 3) after that, told him to fuck off and 4) [if needed] told him "Hey, come here...", grabbed his head as if to confide something with him and smashed his face on the table.
Something I've learned (especially in fighting) is that you don't give your enemies that chance to fight back. Impair them to the best of your abilities ( break their faces, bones, etc.) and get the fuck out of there.