IMPOSSIBLE QUESTION:
The longest one lasted 73 seconds;  what is it? 

It’s something that everyone does - just not for that long 

ANSWER:
The longest burp ever recorded lasted 73 seconds!  Rutt Mysterio achieved the record at the 13th annual Hard Rock Beer festival 'Ruttosound' competition, in Reggiolo, Italy, on June 16th 2009.

Congratulations to Terrie Hampton of Richmond for being the first to correctly answer the Impossible Question!