The Rock and the Dock

Once there was a rock and a dock by the ocean.

Rock said "the water..."
"is quiet" Dock interrupted.

Rock barked,  "I..."
"want to fix this problem" Dock interrupted again.

Rock conceded, "you..."
"speak only predicates" confessed Dock.

"I..."agreed Rock
"speak only subjects" replied Dock.

"We..." smiled Rock.
"will only talk about stuff" explained Dock.
"we..." exclaimed Rock
"both understand". Dock acknowledged.

"We.." declared Rock.
"like this" laughed Dock.

The End