That expression doesn’t apply to people, only things, like events in your life. So it’s always in the third person. You can say „Life’s a bummer“ or „that’s a bummer“ but people can’t be bummers. And like Luiz said, it expresses disappointment or dissatisfaction with something. „Oh, you got the flu? Man, that‘s a bummer.“. Plus it’s very colloquial and it’s never used for really tragic things like diseasters in life. You’d never say, „Grandmother is dying of cancer.“ oh, that’s a bummer.“ or „10,000 people died in that earthquake. „ Oh, that‘s a bummer.“ But, „grandmother got a cold last week.“ „oh, that’s a bummer“, or „The lady got a bruise on her head from that minor car accident.“ „Oh, that’s a bummer.“. Big difference, so be careful how you use the word. I’m a speaker of US English, so I don’t know about its use in other countries. The word „bum“ exists here and that’s the vagabond on the street. That’s obviously different from the UK use of the word. But here, bummers are only things and they’re only annoyances, never anything serious. You’d never say a nuclear war „would be a bummer“. To say that would grossly trivialize to possibility to the point of the absurd.

Hi Luiz and Sergio I think you need to be careful about defining the meaning of any word or phrase without the context. In this case Luiz your definition might be correct. It could indeed mean "I'm a vagrant (or tramp)" but it could also mean "I'm a person who causes frustration or disappointment". Perhaps the sort of person who ruins a party for everyone else. I think it might be this, because this sort of use of the word is the most common nowadays, but I can't say without the context. There is also another British English slang term which might make the sentence mean "I'm such a homosexual"...but I think it's very unlikely to be that because this phrase is 1. a bit old-fashioned, 2. homophobic - but it might well be said by a character in a film like 'Pride'...which is set in the past and is about people being proud of being gay. By the way 'a loafer or idler' means a lazy person. Someone who does very little work/study. A loafer or idler is not a tramp/vagrant. I hope this helps, and I wait to see what the context is. Chris

"Bummer" means 'one that depresses, frustates or disappoints'. It has the same meaning as 'a loafer or idler'. So, in this sentence, you get the idea that 'The person is nothing but a vagrant / a tramp (a person who bums)."

"Bummer" means 'one that depresses, frustates or disappoints'. It has the same meaning as 'a loafer or idler'. So, in this sentence, you get the idea that 'The person is nothing but a vagrant / a tramp (a person who bums)."