My girlfriend was laying in bed because her head was spinning from the vodka she drank so I had to have her stand up to give her the grundle stiltskin she would never forget.
by Forge69 January 18, 2009
 Get the grundle stiltskinmug.
Get the grundle stiltskinmug. by Vanderweasel September 24, 2019
 Get the Moose grundlemug.
Get the Moose grundlemug. During a fart, when air is compressed between the grundle and a hard surface- the air erupts to the nearest exit, usually out the front of the crotch. It is thunderous, not just for the thunderous noise it makes, but also because of the unsettling direction of the blow.
by ceegee2 January 23, 2013
 Get the Thunder Grundlemug.
Get the Thunder Grundlemug. by tobyistheworst November 18, 2011
 Get the Face Grundlemug.
Get the Face Grundlemug. by Gicky September 4, 2007
 Get the grundle puntmug.
Get the grundle puntmug. by Jimmy Dean May 16, 2004
 Get the Grundle Schnacksmug.
Get the Grundle Schnacksmug. When someone is rubbing your grundle or sack area intensly, and you chafe to the point of bleeding and then you let out very thunderous bloody shart onto your partners face.
by Peter Boardman October 8, 2005
 Get the grundle thundermug.
Get the grundle thundermug.