When the horde of Risleyites (you mean, other people eat here too?) swarms in exactly when Dining opens its doors at 5, the provided seating just seems, well, inadequate. So Risleyites dock. Other than being a bizarre sexual term, docking refers to pushing tables together so everyone can eat dinner together. The only problem is, with the round tables, someone's got to be the Crack Baby. But docking is a proud tradition, and eventually Dining employees got wise and just left the string of tables connected in the back for the next night's feast.
The record for longest string of docked tables holds at about twenty-five.