A surname used in the UK to 'pass off' or satisfy someone who is pestering you for information. 'Gubbins' is mainly used when individuals need a quick answer to questions they do not wish to entertain.
'Hey, can you get me guest list for Saturday?'
'Yeah... use Gubbins at the door'
'Do you know who is responsible for the coffee machine in this office?'
'Yeah... I think it's Gubbins'