From Longman Dictionary of Contemporary Englishbeach/ski etc bumbeach/ski etc bum informalSPEND TIMEsomeone who spends all their time on the beach, skiing etc without having a job → bum
Examples from the Corpus
beach/ski etc bum• Parke Puterbaugh and Alan Bisbort are beach bums and proud of it.• You envision a California beach bum. 