When a person is scrawny and slight and has intensely long arms--arms big enough to hug you and 3 of your closest friends because of their length, they are said to have the "ganglies." It is also called having the "ganglies," when a person who has
slender long arms waves them
like a wacky inflatable arm flailing tube man from Family
Guy.
Jim Carrey has the ganglies because he is 6'2" and his arms reach within an inch of the midpoint between knees and hips.
Michael Cera, too, has the ganglies because he is 5'9" and has arms that
hit closer to his knees than his waist.
Any
tall and
lanky person with long arms