adhesive plaster on a hairy chest

The following are instructions on disguise, posture and gait from a Manual of Covert Warfare and Training 1939-1945:

image found here

“If you have round shoulders, a strong “figure eight” cord, crossed in the back, will serve as a reminder to throw out your chest and stand up straight. Put your arms through it and slip it over your head. If you want round shoulders, cross it in front instead. 

image found here

Try the old trick of buttoning your pants to your vest to acquire a stoop. Another way to keep hunched over is to use a strip of adhesive plaster from just above the navel up to the hair on the chest. It should be applied while slouched over. Then try to straighten up!

Mark Ruffalo found here

A mechanic’s face, with ingrained grease, can be affected by rubbing in black grease from an engine or hubcap. A fine crop of synthetic blackheads can also be achieved this way. 

real blackheads found here

Building up the inside of one shoe heel will give a “short leg” limp. With the same device it’s easy to assume the walk of someone who has been paralysed on one side. Build up your left heel an inch and a half, crook your right arm into a useless set, drop the right shoulder down and swing the right half dead leg forward. Be sure your face has a drooped, dull, set expression. Your eyes are usually all that will move, with a bewildered, anxious expression. This cover, if not overplayed, has a good psychological angle because one’s natural impulse is to look away from such cripples.

image of “The Cripple” found here

A hard object in one sock heel will produce a convincing limp. Slightly larger ones in the arch of each foot will produce a “flat foot” walk. Pencil erasers or other firm but pliable articles are best as they do not bruise the foot so much after a period of time. Try also a tight bandage around the calf of your leg with something under it to hurt the muscle as the weight is put on that foot.

Tungara frog perched on pencil eraser found here

Try the “lost arm” which is best done when wearing a double breasted coat. Take the left arm from the coat sleeve. Tuck the empty sleeve into the coat pocket. Hold the elbow close to the waist at the side front and put your forearm around your waist with the left hand on the right hip. If you can button your vest around your arm, it will keep it even flatter, but you may want your arm more readily available.

image found here