Peanuts by Charles Schulz for June 05, 1952
Transcript:
Lucy stands dancing, while Charlie Brown sits nearby reading. She says, "Watch me, Charlie Brown...I'm standing on one foot...watch me! Watch me!"<BR><BR> She continues, "Watch me now! Watch me! See? Watch me...watch me..."<BR><BR> He turns to her and says, "For crying out loud, Lucy!! Don't you think I ever get tired of watching you?!"<BR><BR> She replies, "I wouldn't if I were you."<BR><BR>
That sounds very much like a threat.