Having proven to be useless at every other conceivable college sport, Bumstead jumps at the chance to start rowing. Happily ensconced in the number five seat with his natural "over the head" rowing technique, Dagwood soons finds himself lined up against his wife's admirer's crew in the big race.
The race involves footage of two semi-nekkid rowing crews (the actors) intercut with what looks suspociously like Harvard-Yale clothed boatrace footage, including a nice shot of rowing spectators being driven down the course on moveable seating on railway tracks.
All goes fine until our hero catches the mother of all crabs (deliberately by the looks of things) and then jumps overboard.
The rest of his crew then start to undo their oars, fling them out of the boat and follow, in an attempt to make it look like a capsize (but as any fule kno, that doesn't happen in real life).