How to pronounce bummer:
Example: "Having to stand in line so long was a real bummer"
Of poor quality or highly undesirable.
Example: "Bum note"
Unfair.
Example: "Bum deal"
Injured and without the possibility of full repair, defective.
Example: "I can't play football anymore on account of my bum knee."
Unpleasant or unhappy.
Example: "He had a bum trip on that mescaline."
Exclamation of annoyance or frustration at a bummer (disappointment).