When an arm is under the blanket, when it would quite obviously be more comfortable above it, implying inappropriate touching of ones own body, or masturbation
Garfield, that's quite a "suspicious arm" you've got there, are you excessively masturbating to iCarly porn again?
by Somaliblox December 29, 2019
Get the suspicious armmug. by Dockers4hands January 29, 2018
Get the baguette armsmug. by L. Oh L. October 7, 2022
Get the T. rex armmug.