“And the Hippos were boiled in their tanks!”
“He's as mad as a hippo with a hernia.”
“...about as noticeable as a hippo in a flower garden.”
“The Elephant of Depression wasn't just parked on my chest, it was relaxing there with the Walrus of Gloom and the Hippo of Bleak Friday Nights in Alone. They had beers. They were settling in.”
“The hippo of recollection stirred in the muddy waters of the mind.”
“We traveled for two weeks with a pickled hippo.”