What do you all know about half fat bikes?
Is that an actual term for something like a hybrid mtb/fat bike?
Whatever the answer,have you ridden one?
How do you feel about them?

Do you mean Plus Bikes? If so, I believe that these are regular MTBs adapted to take tyre widths of up to three inches for improved stability and control. However, they are still designed for traditional MTB terrains whereas fat bikes, with much wider tyres, can handle terrains like sand and snow.

You may very well be right.
I was talking to my mechanic at the L.B.S. and he mentioned the half fat.
It did indeed have three inch tires.

My car was badly parked so
I couldn't hang around to learn more.
When I go back on my bike I will check out the name and model of the half fatty.

Half fat refers to a fat bike fork on a regular mountain bike. I don't think anyone markets a bike like that, its just a modification of a bike. I built my Surly Troll to able to run that way. I have a 135 rear disc spaced Moonlander fork on it and my normal front wheel is a rear wheel without a cassette. I have a fat bike so this setup hasn't got as much use as I anticipated. With a narrow rear tire you don't get the float of a fat bike, but you still get a stable handling front wheel. Before I built the troll I put the Moonlander fork on my touring bike for an ice race which was a lot of fun.