Well I know lots of the in-crowd, I like to think I'm one  I spend all my winters in St Moritz, just a lazin' in the sun  So I bought Miss '78 Playmate a brand new M.G.B.  But some guy who could dance and kept a gun his pants  Stole her away from me - and mumma tell me why  Some people have all the fun  Some people have all the fun  Some guys dance and some girls ru-un   Some people have all the fun  I wear carefully faded designer jeans and I once met Marlon Brando  And I even bought a drink for the Aga Khan but he would not shake my hand  Oh mumma make me happy, send me lots more cash  Don't worry, I saw the Midnight Express thirty-six times  And I know where to keep my stash - and mumma tell me why  Some people have all the fun  Some people have all the fun  Some guys dance and some girls run   Some people have all the fun - oh mumma  Oh mumma - tell me why-y-y  I spent sixteen grand on an M.G.B.  What else could she want from me-ee  Oh, oh, oh mumma tell me why  Some people have all the fun  Some people have all the fun  Some guys dance and some girls ru-un   Some people have all the fun  So I borrowed Uncle Rocky's yacht to take her sailin' out on the sea  She said you know me, honey, I'd love to come   But can I bring my boyfriend with me, so there we all were in Bermuda  Soakin' up our Hollywood tans  But they kicked over my castle and they sprayed me with sand  I said mumma, I don't understand why  Some people go partyin', some people got mortal sin  But Miss '78 and her neanderthal mate, well they just won't let me join in  Mumma tell me why-y  Some people have all the fun   It's enough to make you cry-y  Some people h