How to inflate a tire with WD 40

[tsubaki]

As a teenager I worked in a feed & seed store.
One duty was to repair or replace tires using a manual tire changer. After breaking down a huge troublesome tire I found a match stem inside it. Thought it was very odd how it may have gotten in there and showed my boss.
After I patched the tire and mounted it, he came over with the acetylene bottle and a match and did the same thing.
I never had the nerve to try it.