When there are two sisters who are twins and one is smoking hot and the other is a grenade, hence the second being a twinade.
by lsudiver14 December 2, 2010
 Get the Twinademug.
Get the Twinademug. by sk8r420408 April 20, 2011
 Get the Twinademug.
Get the Twinademug.  Get the Twinademug.
Get the Twinademug.  Get the Twinademug.
Get the Twinademug.