The name of your first pet? Mother in-law's maiden name? Security questions are a feature of online booking familiar to anyone with a poor memory for passwords.
However, the US airline Jetblue has potentially sparked family feuds with this very awkward question.
"What is the name of your favourite child?" was revealed to be one of the pre-loaded questions used by the airline's website to jog users' memories.
The question was described as "savage" by one Twitter user.
However, instead of apologising for the insensitivity of the question, the airline doubled down on the question.