When your arm is under the blanket, when it would quite obviously be more comfortable on top, implying touching of ones self inappropriately, or masturbation.
That's one "Suspicious Arm" you've got there Garfield, are you excessively masturbating to iCarly again?
by Somaliblox December 29, 2019
Get the Suspicious Armmug. by Frannie&edgar March 16, 2014
Get the one arm williemug. by ameliaandethandale June 4, 2021
Get the National Gender Arm daymug. by Wall-e want eva August 12, 2018
Get the foot armmug. The act of a man shoving his arm in his ladies anus, elbow deep. Upon pulling it out, one will create the illusion of a tunnel for an asshole.
Melvin: Hey Geoffrey what is the matter? Your arm looks at little sore...
Geoffrey: Yah its sore Melvin, I had a serious case of Tunnel Arm last night.
Geoffrey: Yah its sore Melvin, I had a serious case of Tunnel Arm last night.
by A. Giacs September 9, 2018
Get the Tunnel Armmug.