The phenomenon that occurs when an individual who owes you money (from a previous bet situation) repeatedly forgets to pay you back because he/she "forgot".
John: Hey, do you have my money?
Calvin: Whoops I forgot, tomorrow for sure!
John: Fine.
*next day*
John: Hey, do you have my money?
Calvin: Whoops I forgot, tomorrow for sure!
John: Worst Bet lag!
Calvin: Whoops I forgot, tomorrow for sure!
John: Fine.
*next day*
John: Hey, do you have my money?
Calvin: Whoops I forgot, tomorrow for sure!
John: Worst Bet lag!
by shaquillejohnson June 11, 2011
Get the Bet Lagmug.