Is it possible to change your steam id temporarily?

Okay, so i want to know if it is possible to temporarily change your Steam ID. So make, is there a console command or start up command you can use to temporarily change your steam ID. I already have a felling it impossible considering the steam id is pretty much how your account is identified but if there is a away other than buying gmod on another account please tell me, thanks.

No you cannot, are you butthurt about getting banned on some server?

No just exploring what i can do.

You used to be able to change your steamid using a memory editor, but that have been patched lonng ago.