The number 25 appears repeatedly in the background (on balloons, confetti, and Squidward’s beach towel). This marks the 25th anniversary of creator Stephen Hillenburg’s original character sketches (1989–2014, when the film was in production).
: During the song "Squeeze Me," Squidward comments that the music needs "interpretive dancing" and proceeds to perform a legendary dance routine. the spongebob movie sponge out of water end credits wiki