To 'knock over the fishbowl' is a euphamism for failing a 'girlfriend test', where your girlfriend sets up a test to ensure that you are committed to the relationship.
Alice invited me over to her apartment. Turns out my girlfriend was waiting there... Way to knock over the fishbowl.
The act of ejaculating into one's fishtank...waiting patiently for the fish inside to consume your man chowder, then proceeding to fillet said fish into sushi, serving the meal to an unsuspecting 3rd party (e.g. unfaithful girlfriend, douchey best friend, housemate, etc...)
A: Shanna wouldn't take Tim to taco belllast night, so he totally gave her the Tokyo Fishbowl tonight!
To be manipulated in a work environment through deceit and dishonesty. Generally takes the form of being persuaded into working long hours through empty promises which are inevitably broken.
Martin: "We weren't able to go on a family holiday this year unfortunately. I even had to work through Christmas Eve to try and meet our team's deadline just to qualify for the Christmas bonus I promised."
Jane: "Did you at least get the bonus?"
Martin: "I didn't sleep for 3 days and all I got was a $50 Visa giftcard."
Jane: "Oof. Sounds like you got fishpooled"