The meaning of "bear's service" originally comes from a fable about a man and a bear. The bear wanted to help the man by killing a gnat which sat on his forehead. As a result both the gnat and the man died.
This idiom is known primarily in Slavic languages.
"Mike was trying to help with washing up but he dropped my favourite cup on the floor in the process."
"That's called a bear's service."
An individual, male or female, who has an extremely hairy ass. So hairy that it's like a thick beard from the pubic region, through the taint and up to the top of the ass crack.
How was your hook up last night with the chick you met on Tinder? She was hot broooohhh till I got them panties off and found a bear's ass. Nasty braaaahh. Did you hit it? Hell yea. She's a little matted and knotted up today.
A woman's pubic hair which is unusually thick and curly.
Gee Fellas...I picked up this girl last night and, when I went down on her, I discovered her snatch to be just like the top of a sweaty old Bear's Head.
Origin: It's a lesser known fact outside of zoology professionals that bears love pears. While most bears do not encounter pears in the wild, pears can make for a delightful snack in the conservatory. However, feeding bears pears is a relatively inefficient way to provide quality snacks and given the average price for pears, it would be a costly habit to begin with bears in zoos or other conservation habitats.
I heard the boss took Marc out to that fancy steak house because of his leadership on that last project. That's just the bear's pears.