This episode is the first time in the series they reveal that Ted and John are afraid of Thunder as is shown the movie Ted 2012
When Blaire is trying to convince Matty & Susan to talk to Johnny about sex, Matty says "when you get drafted they show you a film. Tony Randall was in it." He is referring to the 1972 Woody Allen film "Everything You Always Wanted to Know About Sex But Were Afraid to Ask", a comedy loosely based on a sexual education book of the same name. It is, however, more likely that Matty would have watched it on his own accord than it being shown to new recruits by the military.
Johnny yells "I need an adult!" when talking to the creepy pharmacist. This is a reference to an episode of 'Family Guy' when both Chris and Peter yell this out.