In seriousness, though, the death roll is both a hunting tactic as well as self-defense. So if the croc/gator/etc are simply trying to get you to BTFO there's a decent chance they will attempt to "death roll" without even having any part of you in their mouth. Even if they do, they may very well let go.
.
And, again, it DOES often result in dismemberment even when attempting to kill. So if you can survive that and stay aware enough to get away you may end up living through the encounter. I still wouldn't ATTEMPT it, but there is a chance
Actually, this is one of the transitory evolutions mammals have from reptiles: our secondary palate closed, theirs only partially closed.
.
This means that we can chew while breathing, something that is postulated they cannot do.
.
It has also been thought to be linked to higher metabolic rates and thus endothermism (ability to self-regulate body temperature, or warm-blooded as some people call them), but considering that you do find crocs able to close their mouths with prey in it, holding it underwater to drown, this might contest that notion.
.
And, again, it DOES often result in dismemberment even when attempting to kill. So if you can survive that and stay aware enough to get away you may end up living through the encounter. I still wouldn't ATTEMPT it, but there is a chance
.
This means that we can chew while breathing, something that is postulated they cannot do.
.
It has also been thought to be linked to higher metabolic rates and thus endothermism (ability to self-regulate body temperature, or warm-blooded as some people call them), but considering that you do find crocs able to close their mouths with prey in it, holding it underwater to drown, this might contest that notion.