Porn will train the next-gen AIs and, since AI cannot tell the difference, in the future 90% (-99%?) of all language will be based on porn, just as (looking back with 20/20 hindsight) the proportion of the current internet would imply must have been true of today's culture.
"Yes spank me harder daddy" will come to mean "I would like a promotion in my place of employment, so that I can take on exciting new challenges in this fast-paced, team environment":-)
Ofc, "help me stepbro, I am stuck" will still mean the same thing as it always has.
spoiler
the joke here is that the change in meaning has already occurred
Future generations are going to be so confused... :-P So exactly as we are now, I guess? :-D
AI = "magic", or like "synergy" and other buzzwords that will soon become bereft of all meaning as a result of people abusing it.