The only creature immune to an adorable baby panda's charm is another baby panda.
So while even the sleepiest human would be all too happy to give into little Mei Huan's nudges, his brother, Mei Lun, has learned to ignore the panda pokes during naptime.
See also: Baby Panda Reunion With Mom Is Cutest Thing on Internet Today
The panda cubs are almost four months old and live in Georgia at the Zoo Atlanta. You can watch all of the adorably fuzzy duo's nap sessions on the zoo's Panda Cam.
BONUS: 20 Adorable Animals With Bad Cases of the Hiccups
Hiccups make Fred sad.
Who knew alpacas could be so adorable?
We think Mylo deserves his hiccups. Bad Milo!
This monkey appears to really enjoy his hiccups. He's practically showing off.
So cute!
This pretty mini dachshund sort of hic-barks.
Baby porcupines get tiny squeak hiccups.
This dog's hiccups aren't particularly awesome, but the cat looking on in utter disdain certainly is.
Ever seen a horse with hiccups? Hit play and tick one more thing off your bucket list.
This cat's all like, "Stop filming me."
This needs no translation.
Jack gets really cross when he gets a bad case.
Hiccups steal this bathing panda's dignity.
Nemo's adorbs hiccups have been viewed over 2 million times.
Bailey maintains quiet bunny dignity during his attack. We love him for that, as well as his ickle snuffly nose.
This Bernese mountain dog also takes his hics on the chin.
Moses is so cute, we suspect he might be an animatronic.
Biscuit's not sure what's going on.
This capybara remains stoic through its hiccups. He knows they'll pass.
Finally, how about a small pile of purry kittens with hiccups? You're welcome!
Image: YouTube, Zoo Atlanta