Alexa's mum(Tiffani Thiessen) talks about her first kiss being with someone called Zack, surname beginning with M. This is an in joke referring to Zack Morris from Saved By The Bell, where Tiffani Thiessen found fame,
In this episode, Jack Griffo's character says sarcastically that he's secretly a superhero. In the Thundermans, a TV show in which Griffo starred, his character was secretly a superhero.
When Dylan asks if Alexa is a superhero as a sarcastic answer question this may be referencing to Paris Berelc's previous role in the Disney XD series "Mighty Med" (2013-2015) starring her as superhero, Sylar Storm.