Cheese your MAC on Linux.
Prerequisites: Relies on you having ifconfig installed.
Can be easily customised to lengthen/shorten how long the spoof lasts, or for the name of your adapter if it's different.

I trust you to be good with this. Don't do evil.

Function 1: View your current MAC address
Function 2: Learn a little bit about what a MAC address is and why people may spoof them
Function 3: Run a routine that replaces your MAC with a fake for one minute.

MADE FOR HACKSHEFFIELD6