Adjective to describe something so painfully emotional, and tragic, that your stomach feels knotted. It relates to feelings of guilt, sadness and devastated sympathy.
The really tragic suicide of ten year old Ashlynn Conner, from Illinois, suffering after being bullied, was described as 'gut-wrenching'.
That feeling you get when you put your toothbrush too far into the back of your mouth when you're on the very edge of vomiting where it seems as though someone is torquing your stomach with a wrench, and you manage to hold back the contents of your last meal.
A large penis having both length and width. Large enough that while having sex, a woman feels almost like her stomach is being screwed; a somewhat gutwrenching pain if the penis is large enough. (a.k.a. mine)
"She said she liked it hard and rough...then I gave her a taste of the gutwrench, and she's not so sure about thatanymore."