Speaking for my grandmother/grandfather, here-
My dad is definitely a disappointment to her. She always had problems with him acting out as a child. Of course, she didn't have it easy being a mother at 16.
On his 19th birthday (coming of age in BC) he stole his dad's car, credit cards, money, and booze and decided to take a drunken joyride. Which is messed up, considering that my dad was nearly killed when he was 3 years old from a drunk driver. He swerved off the road, totaling the car and was caught by the police.
Got into selling drugs for a living. Got addicted to them, too. I always wondered why he sniffed so much.
He had supervised visits with my brother and I, at my grandmother's. I remember once he fed me alcohol to the point of drunkenness (I was 8) to get a few laughs. I only remember how upset my grandma was.
I hardly get to see my father because he is constantly in and out of jail. The only time that he ever has the shred of decency that it takes to call his own mother, it's to bail him out. Or he needs to live at her house because he's under police supervision. He is now 43 and as I type this, my father is once again in jail. Because he can't find or keep a job that doesn't involve illegal activity.
He's stolen my grandmother's credit cards and money just to drink, snort, and gamble away a decent nest egg in a single evening. I remember this happening at least twice while living with my grandmother, and I was a teenager at the time. My dad was in his 30's. Once again, he was living with her because he got arrested and was under police supervision.
He doesn't even own a house anymore. He let my childhood home fly back up on the market because he thought that he could teach the government "a lesson" by halting payments on all of his late child support payments.
To top it off, I've seen him fly off the handle in a drug-induced rage at my grandmother. Calling her things that nobody should ever call their mother. One of the worst freak-outs was on Mother's day, and this was shortly after my grandmother let him live with her again because he got arrested.
Pheeew, sorry.