Especially if the “customer” has an afro. 
That OP actually made me go LOL. Also WTF?
The TV show Whose Line is it Anyway has a lot of ideas of things that can be funny. Two catagories in particular are “Scenes from a Hat” and “Worlds Worst”. They have things like:
Things a Dentist says that you can’t say to your partner
Worst pickup lines
Elvis in other jobs (my favorite joke was someone being Elvis as a crossing guard - directing traffic with his dance moves)
Strange names for a dog (my favoite joke was someone calling their dog… "help! help! help!)
No subject is intrinsically funny nor any intrinsically not.
My favorite humor mostly comes from an unexpected viewpoint about something; it should be partly legitimate and real, that viewpoint, but partly wrong (whether by being an exaggeration, an oversimplification, or an extrapolation to a ridiculous extreme, or whatever).
The partly true aspect of it gives it teeth; the distorted/wrong part of it gets carried along and makes it funny.
Funeral Home Mistresses
This is a workshop. It’s not a class for a grade or credit. There are no rules about where we get our material. If I were taking a painting workshop, there would be nothing wrong with my asking friends for ideas of subjects to paint. The work is in the treatment of the subject, not where you get your ideas.
This week’s “homework,” a word always used with an ironic chuckle, is to come up with five one liners and one five-minute bit. I have already done both of those. Twice over.
This is an exercise I came up with myself. An exercise in thinking outside my own box.
There have been one or two over the years we still laugh about; it happens sometimes.
Posters who insist you are asking for help with homework, when you aren’t.
Nursing Home Mistakes. (segue!)
AirBnB. You’re in their house
Winner!
Im trying to see it but man, that’s some esoteric humor!
Involuntary transfers.
What the one my FIL was in call deaths.
You’ll like this one, the main prison in my country is near the town of Libertad, so it’s called Penal de Libertad which literally means Penitentiary of Freedom.
Seems like what’s going to work in stand up depends entirely on who is delivering it. Not everyone can do Daniel Tosh’s material, and I doubt he could pull off a Cosby story.
Personally, I’m a fan of laughing at horror and encouraging others to do the same. So in answer to the OP, think about truly horrible stuff and find the ironic or absurd twist to it.
Autonomic dysreflexic hijinks!
Disabled people on UBI!
Police interactions with black people gone comically awry!
The “deal”.
As in, 'what’s the deal with the hardware store? It’s not all hard, and we don’t wear any of it!"
Or, “What’s the deal with Grape Nuts cereal? There’s no grapes; there’s no nuts. Who’s coming up with this name?!”
And, “What’s the deal with laundry commercials? They are always telling you they can remove blood stains. I don’t know about you, but if you have blood stained on your clothes, you got bigger thing to worry about then laundry.”