an Aussie term (native to Brisneyland) meaning to meet work associates who have become your closest friends in order to partake of sushi, catch up on gossip and have general good times which may occasionally end with a movie, a video arcade session and a visit to the ice-cream parlour, but only on a Saturday and only at the best sushi train in your town or city. Not to be confused with the term sushi.
2. Let's meet for sushu this saturday?
3. Do you remember that time we did sushu and I wore that redonkulously short dress?