I am guessing that MANY words start off as slang and then they become part of standard English. For example, "I will 'text' you later." Text started off as a much different word than "I will send you some digital information via my phone." I could go on and on but I won't.
Finally, making a point by calling out someone's fine understanding of the english language (whether it be spelling, grammar, or use of non-standard english words) just ironically weakens one's eventual counter point.