Been to hell and back, I can show you vouchers
A lot of this verse has to deal with taking figures of speech literally. Saying you have gone to hell and back usually just means that you have experienced a lot in your life, both bad and good. But Wayne claims that he has actually met Satan and lived to tell the tale; and he has evidence to back it up. (In tourism a voucher entitles you to go to certain places and do certain things, so Wayne claims that he still has the voucher that allowed him to visit “hell”).
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