What makes the world go round?

this is the insert that Queen put in the album

In the movie Bohemian Rhapsody, during the party scene, a pair of half-dressed girls can be seen riding exercise bikes, which is a reference to Queen’s Fat Bottomed Girls/Bicycle Race

Nov. 17, 1978 - Freddie sings "Fat Bottomed Girls" onstage with strippers at Madison Square Garden

The two songs were released together on a double A-sided single, and both songs refer to each other. Near the end of Fat Bottomed Girls, the song references the band's song "Bicycle Race", with Mercury shouting, "Get on your bikes and ride!" "Bicycle Race" reciprocates with the lyric "fat bottomed girls, they'll be riding today".

Michael McKean stated that "Fat Bottomed Girls" was an influence for the song "Big Bottom" by Spinal Tap

https://en.wikipedia.org/wiki/Fat_Bottomed_Girls
https://www.reddit.com/r/OldSchoolCoolMusic/comments/42pe4p/nov_17_1978_freddie_mercury_from_queen_sings_fat/