What exercises can I do do give me a nice toned stomach but NOT give me abs? My friend said sit ups and reverse crunches, but she said they'd probably work my abs too and I really don't want abs. I've seen people who have nice flat stomachs without abs so I know it can be done, I just don't want to do the wrong exercises and wind up with a really muscular stomach. I don't really have belly fat since all my weight goes to my butt and thighs but it's not toned. I just want some nice definition without a six pack.
EDIT: In case anyone thinks I'm being lazy, I have looked online for exercises for flat toned stomachs but they always seem to work the abs too, hence why I'm asking here.