The sign for this is clamping your hands, opening and closing 3 times like a crab and saying "clammy fanny" in a voice like 'Lenny's' from the the story 'Of Mice and Men'.
My girlfriends fanny stinks, she's got a clammy fanny! Uch a fi!
Socially awkward and often positioned out of the view of others. Avoids peer interactions and intimate relationships. Prone to computer technology and artistic pursuits. An introvert who may come out of the proverbial "clam shell" but this is a rarity."
Ryan sure was clammy last night; he positioned himself in the corner of the room during the entire party, barely spoke to anyone, and looked super uncomfortable.