To do the sign for "plug" hold up your non-dominant
index finger and then use your dominant-"V"-hand as a plug. (Don't
move the non-dominant hand -- just move the dominant hand.)
PLUG / PLUG-IN


But wait! There's more! Reverse the movement and you've got....unplug!!!
UNPLUG:


(Oooh. Tricky eh? Please, hold all applause till the end. If you
missed it, just refresh the page.)
You can learn
American
Sign
Language (ASL) online at American Sign Language University ™
ASL resources by Lifeprint.com © Dr. William Vicars