From English - German Ding/FreeDict dictionary ver. 1.9-fd1:
hoser /hˈəʊzə/
[Can.] [pej.] [coll.] Idiot <masc>, Blödmann <masc>, Blödian <masc>, Schwachkopf <masc> [pej.] [ugs.]
Synonyms: numskull, numbskull, dunce, dunderhead, douche, douchebag, douche bag, dickhead, thicko, berk
see: numskulls, numbskulls, dunces, dunderheads, douches, douchebags, douche bags, dickheads, thickos, berks, hosers