Sperm cannot survive in temperatures reached by common refrigerator freezers for as long as Carrie planned to, so Mike should not be as worried as he is.
Daphne Zuniga previously guest starred with Michael J. Fox on two episodes of Family Ties (1982), another show by Gary David Goldberg.
The title is from the 1966 hit "Summer in the City" by The Lovin' Spoonful which hit number one on the charts.