Well not for say in my mouth,but anyway was jig fishing over the weekend and nice largemouth hit the jig then snap went the line and then seen the bass jump couple times out of water to free the jig ,so guestion is do they come free eventually and can they still feed?

Most likely the fish will be fine.

I’m sure he got rid of it the same day 

Just some added bling for him to show off to his buddies.

FM

I found a broke off rat floating 2 hours after he broke it off, so rest easy?

Jig is an easy bait for them to throw since they have the weight at the end for leverage to help throw it. Fish should be fine.

You can increase the odds of the fish shaking it loose by crushing down the barbs. Also increases the odds of you removing it if you hook your own mouth ?

 

+1 on crushing barbs.  I primarily fish for trout (C&R) and when I tie each fly the first thing I do is remove the barb.  I do the same for my bass flies and lures.  I think I've lost maybe 1 or 2 fish this year having them shake a hook.  But it is far easier to release them.