Yes I've seen there'd suction cup...so

You're saying I should resist the urge to lick that when the machine is on...no matter how tempted I get? Lol...

Anyway my real question is based on experience with high voltage with big caps inside guitar amplifiers where it is said you can actually be zapped by other places in the circuit somehow...there's no chance the voltage that is associated with the anode can somehow get somewhere else in the circuit?