Non-PRO English to Italian Art/Literary General / Conversation / Greetings / Letters

si sta descrivendo uno spot pubblicitario di una stampante di etichette. Nello spot compaiono due colleghi di lavoro.

While the first user struggles to get his labels printed, his colleague not only completes his labels in seconds but then proceeds to label everything else around him, including his coworker's rear end.

come si può rendere qui rear end?