suspicious arm 

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?

suspicious arm by Somaliblox December 29, 2019

Suspicious Arm 

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?

Suspicious Arm by Somaliblox December 29, 2019