off-the-wall
     adj : conspicuously or grossly unconventional or unusual;
           "restaurants of bizarre design--one like a hat, another
           like a rabbit"; "famed for his eccentric spelling"; "a
           freakish combination of styles"; "his off-the-wall
           antics"; "the outlandish clothes of teenagers"; "outre
           and affected stage antics" syn: bizarre, eccentric,
            freakish, freaky, flaky, outlandish, outre
see also:
bizarre eccentric freakish freaky flaky outlandish 
outre