Article continues below advertisementKhloé and Rob Kardashian's sibling banter is cracking up the internet.A hilarious text exchange between the two went viral after screenshots surfaced on Instagram, showing Khloé reacting in total confusion when Rob told her, "I had lasik."Article continues below advertisementSource: MEGAKhloé Kardashian's texts with Rob Kardashian went viral online.Article continues below advertisementThe Good American co-founder immediately responded, "No way! I had no idea. Did it hurt?" before adding, "No, you didn't.