Do you know the visual/sound effect gags involving engineers (engineer-ears), motorist (motor-wrist) and terrorist (terror-wrist)? Difficult to describe but I'm sure you could improvise. Hilarious/groan-inducing depending on your audience. :)
Add in Viscous Circle (move hand in circle, snarling) and micro-wave (make very small wave with fingers)
Add in Viscous Circle (move hand in circle, snarling) and micro-wave (make very small wave with fingers)