The original script was titled "Cherries" and features three fathers as the leads. One of the fathers was later changed to a mother, Leslie Mann's character.
This film was produced by Evan Goldberg and Seth Rogen, the creators of "Superbad." "Superbad" is a film about three high-school friends who try to have sex before graduation. A very similar story to "Blockers," except "Superbad" features male protagonists rather than female.
The film was originally titled "Cherries" during development in 2012. When production began, it was changed to "The Pact". It was renamed "Blockers" in October 2017, when the film was in post-production and the first trailer was released
The film's title and posters are a reference to the act of "cock blocking"; the rooster icon was removed for advertising on broadcast television and cable networks that objected, with only the Blockers text being shown.