What's the most savage of Tubbs's canon lines? Why would you choose that one specifically?
For this answer, I'm going to go with the one that seems the peak savage to me. It comes after the Hostile Burnett arch, where her partner Sonny Crockett gets amnesia and turns crime boss. As the crime boss, he shoots her twice before leaving her to die in an alley.
The conversation is dour. The entire vice unit is still a bit bitter and dismayed at all the chaos his little stint created for them. Tubbs in particular had been burned something AWFUL by his actions. Everyone is directing their sarcasm and blunted anger at Crockett. Tubbs is not immune.
Tubbs: "Lieutenant, look who's here. I think it's Crockett."
The wording of this first dig is sooo sooo important. She applies the term 'think' instead of saying that 'it is' Crockett. Think implies the presence of doubt. Doubt that had plagued her every step of the investigation that led to his recovery and his transition from Burnett back to Crockett. Is it truly Crockett they got back? Is it some twisted form of Burnett-- pretending to be mellowed out? Is Sonny even the same man he used to be? It also implies that Tubbs is still heavily wary of TRUSTING him the way she had before. After about six years of spending almost every moment of every day together that dent in the trust she instills in him is sooo soo soo important!!!!! Had she used "it's Crockett" instead, it would have confirmed that she was secure in believing that it was really he who returned not the abominable crime-boss.
She's still not entirely buying his amnesia act. Oh, she knows it's very possible, but could it really have change his character so drastically????
While she wants to believe Sonny, in his right mind, would never attempt to murder her, there's still that,--- what if he'll turn on me again, that she can not dismiss.
(Here, I don't think Sonny is expressing real annoyance but rather sarcasm here. I think he's owning up to deserving the barbed remarks.)
Tubbs: "See you on the wanted posters, Sonny."
Wounded Tubbs tends to be one full of sharp quips, anger, and distancing herself from the people who caused the pain in the first place. There's so much bitterness infused in the expression of the line. She is indirectly reminding him that he may have come back to work like nothing has happened, but she's still EXTREMELY hurt.
Here, we also see her establishing a bit of distance between them. It is also perhaps, indirectly warning him that she will NOT follow him down unlawful paths again. She gave up her paid vacation time to seek him out, to pull him out of his mess once (against DIRECT orders). Tubbs won't be so apt to do it the next time. At least, not until she gets over being so badly burned and the trust issues.
I chose this one because of all the meaning in the undercurrent of the words. These lines are like icebergs. You can see the subtle surface layer but they run like twenty feet deeper than you'd expect. Plus, this is the line that stuck out to me the most in the series. It's the one time we see Tubbs being a wee bit barbaric in the sarcasm aimed at Sonny. It was well-deserved. But at the same time, it proves that his actions as Burnett are still clouding her opinion of him when he returns. It directly plays into what Tubbs expressed the previous episode with Sonny in the interrogation room. "We were friends. No- we were more than that---" The words we are friends and we are more than that have now been replaced by a unwavering past-tense word. Were implies a heavy shift in Tubbs's thinking. Tubbs has had to do so much reevaluating over the weeks/months Sonny was allowed to run amuck.
I think the beautiful thing though is that Crockett strives to regain Tubbs's trust. By the end of the series, everything feels a bit more mended than he had been.