The video posted earlier in this thread highlights some interesting issues. The person holding the guitar could create the static, but the person filming the video stated that he could not reproduce the static on the same guitar in the same environment. The issue has a lot of variables and is very dependent on the make up of the actual person. the pickguard is made of PVC, so it holds a negative charge. A dryer sheet will work to dissipate the static for the short term, or you can get a stat gun to positively charge the guitar.
Here is some interesting info on the subject:
http://www.electrostatics.net/articles/static_build_up_on_people.htm
From the article:
There are a wide range of factors that can affect the amount of electrostatic charge that can build up as a voltage on personnel. Some common major factors include:
- The floor material and its electrical resistance, and resistance-to-ground
- Personnel footwear, especially the materials of the shoe sole and its electrical resistance
- Atmospheric humidity
- The manner in which a person walks, e.g. scuffing and friction of the shoes against the floor
- Actions of brushing against furniture, sitting and rising from seats
Static electric charges are separated whenever two materials make and break contact. This occurs with regularity between the shoe sole and floor material in walking action. Charge tries to dissipate and recombine where possible, but this cannot happen if it is prevented from moving by insulating materials. Charge builds up if the charge is generated faster than it can dissipate, and a high voltage can quickly result.
Shocks are felt by people when they touch a discharge path (e.g. metal frame or another person), if the voltage on their body exceeds about 4 kV (4000 V).
Charge generation is affected by the types of materials in contact. A guide to this is given in a triboelectric series.
More positive
Rabbit fur
Glass
Human hair
Polyamide (nylon
Wool
Fur
Silk
Aluminium
Paper
Cotton
Steel
Wood
Rubber
Acetate rayon
Polyethylene (PE) and polypropylene (PP)
PET
PVC
Polyurethane
PTFE
More negative