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!
Renee was sexy fishbooking when she posted this status update: Miss Maggie says she had a fun time this weekend and can't wait until you come back over to give her some of that good stuff.