4-panel episode "Penguicorn Insurrection" of webcomic Horned Warrior Friends:

Panel 1 of 4: Unicorn on the shore sees Penguicorn. Unicorn says "Hi there little Penguicorn! What are you up to?"

Panel 2 of 4: More penguicorns join Penguicorn. Unicorn says "'Mounting an insurrection'?"

Panel 3 of 4: Even more penguicorns come out of the water. Unicorn says "Well that's a long word isn't it"

Panel 4 of 4: A flood of invading penguicorns surrounds Unicorn. Unicorn says "Where did you learn that"