what does that mean?

"cool story bro!" but its not correct and more a joke no one really talk like this in germany

Ohne dein Kommentar hätte ich das nicht verstanden wer zum teufel sagt geschwisterteil? o.0

"coole geschichte bruder" would be the german meaning, yes we use "cool", ALOT

jo weiß ich ;D

haha xD

literaly - entertaining story my man sister (I don't think anyone would say it like that in german really)

i m german and translated it would mean "entertaining story manly silblingpart... that makes no fucking sense

Yap, your translation is more accurate, still makes no damn sense

so i guess, as always, op is a fag

Ummm, "entertaining story manly sibling" are you really that stupid that you don't see the actual meaning? It's cool story, bro.

i m german and no, männliches geschwisterteil doesnt mean bro, it means manly silbling part and makes no sense, "bruder" means "Bro" retard

It's crazy if you're german and don't understand that "männliches geschwisterteil" (male sibling) is a synomym, or more a funny way of describing "bruder"

Yes, I could've used hitler's face with "coole geschichte, bruder" but that's not funny at all.

Indeed, it ís"retarded and it makes no sense
and because it's retarded, it's funny, at least I get positive thumbs regularly with it
Like the Joseph Ducreux meme (search it on knowyourmeme if you don't know who this is)

Also I can't say I'm german like you, but I'm dutch, live 20km off the German border and my father lives in germany

it would be funny if it was a german word or expression, BUT IT ISNT