G Herbo’s ‘Superstar’ Challenge Doesn’t Amuse Usher

G Herbo taped himself striking the high notes from Usher‘s renowned “Superstar” challenge Tuesday night — and it generated a puzzling jab from the R&B star himself.

Herb kicked things off by light-heartedly publishing to Instagram that he might sing much better than Usher on his “worst day.”

Clearly, Usher wasn’t entertained ‘cuz he reacted with a 🧢 emoji, which suggests “You’re lying.” Of course, the famous crooner has great factor to be a little irritable … he just recently admired his grandmother, who passed away previously in the week.

Meanwhile, Herb caught himself on a different IG video squaring off versus his “No Regrets” partner YK Dee in a B-Boy dance … the Chicago rap artist was drinking a clear liquid — or some liquid nerve as they state — with every pop lock and two-step.

Herb’s fans, consisting of Lil Wayne‘s child Reginae Carter, were consuming his brand name of humor, commenting with chuckling emojis.