Last time I studied was when I got my CELTA which is an internationally recognized certificate to teach English as a foreign language... Then I got a job in Moscow where I have been ever since...
Master in Business & Technology about 10 years ago. Didn't have an undergrad, thought if I was going to bother with Uni education I might as well get an 'M'.
'Entry is also available to applicants without a first degree providing they have acceptable academic and/or professional qualifications and/or related work experience.'
is what got me into a UNSW Master's degree without an undergraduate degree. You need a fairly substantial CV to get in this way, but it can, and has, been done.