It's a "look." Unfortunately, I'm aware of this due to frequenting Feddit's MakeupAddiction. But those of us with at least a rudimentary sense of esthetics understand that ombre lips only look good in staged, perfectly lit and edited photos, not in real life. In real life, just like you stated, it looks like you ate a bunch of greasy food after applying your lipstick and never bothered to reapply.