Rock Lobster a great song! I don’t think it’s to long and it’s likely that you were listening to the Radio Edit which is more readily available and a couple minutes shorter than the original album track.
Cosmic Thing is an album I like, but for me it signals the beginning of the end for the B-52s. Ricky was the music man and his absence is felt very strongly here (he died while the band was completing their previous album). They followed it up with Good Stuff which isn’t very good and then disappeared until 2008 when they came back with a different, yet solid album Funplex.
Class dismissed.