It's one of the Cleome's in the Capparidaceae.
>> I found this flower growing in someone's yard, and there was plenty of them,
> and I could not help myself from taking at least one. I know very rude, but
> it was 3am in the morning, and I just had to know what it was. If you know
> please email me at clubber_99 at yahoo.com. Thanks allot. I have no idea if I
> am supposed to post pictures here or not, so if I am not I apologize.