Peanuts by Charles Schulz for July 07, 1973
Transcript:
Snoopy, the World Famous Tennis Pro, wears a visor and holds a tennis racket. He bounces the ball.<BR><BR> Snoopy continues to bounce the tennis ball.<BR><BR> Woodstock holds a tennis racket and looks angry.<BR><BR> Snoopy smiles and thinks, "It unnerves your opponent if you bounce the ball a lot before you serve!"<BR><BR>
I believe the word is “irritates.”