The second someone says they like Trump, I dismiss everything they say from then on, and I will have as little to do with them as possible

There's a distillery near me with a reputation for good whisky, but I've met the owner, and he's an idiot, bigoted Trump-loving ignoramus

So I won't buy his booze

cigarettes (nicotine) is for forgetting all the things that dont matter to focus on the things that do

The painting is Paar im Gespräch (Couple In Conversation), c. 1885 by Simon Glücklich

I was doing some woofing at a farm near Tarragona and the guys we were staying with were laughing because some new American immigrants moved into a nearby Finca.

They were upset because they stated that they were Trump fans and then everyone blanked them

I bet the Gespräch here is about divorce

We used to call that "flipping the Bozo bit".

https://en.wikipedia.org/wiki/Bozo_bit#Dismissing_a_person_as_not_worth_listening_to