Earlier quoted context omitted.
I caused havoc in high-school with that. And finding a way of executing binaries inside Novell's Netware thing, via the "Open" dialog within any Office application's Visual Basic macro editor haha
Renaming executables to explorer.exe worked with the application whitelisting solution my school implemented. That's how we ended up with 8-player age of empires 2 deathmatches after hours ;)
However it turned out that you could rename them .bat or .cmd and they would execute just fine.
I think Doom 2 multiplayer was extra fun because of the added need to be aware not just of in-game enemies but also the need to be aware of the teacher and be ready to instantly quit at any moment.