just go to the toilet but get 'lost' on the way back and have a walk around
'why were you gone for so long?'
'gotta go when you gotta go'
cant argue with the facts
I sometimes use an app call Self Control, download it and you add websites to a 'blacklist' and then you set a time period. Until the time runs out you are unable to access those websites, even if you delete the app and/or restart your computer. I set it for 30 minutes most of the time.
Dunno...