1- you're tough (not fragile/weak) 2- smells bad 3- don't get along with family e.g argue/don't talk

"It stinks" literally means "it smells bad." It can also mean "this is a bad or unfair situation." "The supermarket was completely out of dog food, and after I drove four miles to the pet store, it turned out it was closed for Labor Day." "Wow, that stinks." Thin ice on a lake is dangerous to walk on. You can walk on it, but if you aren't very careful it can suddenly break underneath you. Figuratively, to "be on thin ice" means your behavior is being closely watched, and if you do even the slightest thing wrong, you will be punished. "I can't go out with you tonight. I need to stay home and study. Usually my dad lets me get away with murder, but after my last set of grades I'm skating on thin ice."