Smug gentleman

I laughed at the first part but can you explain the bottom part? Upvotes regardless

The company LG started to troll me over my critisism of an ad they ran featuring what looks like AA batteries with solar panels on them. The LG used some fancy old-time words, so I did too. The end basically means I am here to make fun of your ad.

Then the Japanese must have an Olde English dictionary to use our old English against us.. lol