The father puts his son in a bad situation by allowing him to watch men strip and he does see one of the men's penises.
There is no verbal or physical abuse, just the above neglect.
A boy sent into a bar to sneak a peek at the show, drinks leftover drinks from all the glasses he can find, and ends up with a hangover the next morning. Adult characters drink.
The main characters son sees men stripping and sees an adult man's penis because his dad didn't have the common sense to not allow his son in the room whilst this was happening.
At the start of the film one adult character tries to kill themselves in their car. He gets rescued but the three men then jokingly discuss possible suicide methods together.
There are fatphobic comments toward one of the main characters by the other main characters but, in the context of the movie, it is done to highlight the negative impact these sorts of comments can have on people.
Fewer than you may expect, there are a few scenes where they're in their underwear but no-one is fully nude until the final scene, which is shown from the back.
Women are objectified a couple of times. One scene where the men objectify women in a magazine is done to highlight that the men wouldn't like it if the tables were to be turned. Supposed to be enlightening rather than offensive.
No, but a man frequently practices his strip dancing routine while his child son is present. Later in the movie social services find out and are concerned about it