Wireshark, a popular network protocol analyzer, offers various configuration options that can be used for harmless and entertaining purposes. The tool's flexibility allows users to customize its behavior in unexpected ways. Practical jokes using Wireshark can include modifying display filters to make packet lists unreadable or disabling protocols to hide capture details. Additionally, users can create custom hosts files to translate network names, making it appear as though different devices are communicating. These pranks may bring a smile to the faces of colleagues and friends.

Source: https://wiki.wireshark.org/PracticalJokes