Hopefully the parent of your post was joking - the site he linked to is a "joke" site - but either way, it's misleading and unhelpful (particularly to non-English speakers) to pretend that "begs the question" was used incorrectly there by tehabe. It wasn't.
http://dictionary.cambridge.org/dictionary/english/beg-the-q...
http://www.oxforddictionaries.com/definition/english/beg-the...
http://www.merriam-webster.com/dictionary/beg%20the%20questi...