What Were They Thinking In This Gain TV Ad?

The laundry detergent maker Gain recently started airing a TV commercial for their Flings! detergent packs, and it has the internet all up in arms.  In the commercial, two sons remove their father's jockstrap from his bag and dangle it in the napping dad's face.  Since the jockstrap was previously washed in Gain, the father's actually not bothered and he starts to snuggle with the article. That's not the part that has people freaked out.  The issue is when one son then decides to smell the jockstrap for himself, but he seems to be disappointed.  Upon seeing the commercial, the Internet reacted and of course many of the people who did were disturbed by what they saw.  What do you think about it?