Audio problem: When the toys walk to Woody under the bed, Bo Peep says, "Can you see it?" Her mouth doesn't move.
Audio problem: When Andy is in his cardboard Buzz costume, and says "Buzz Lightyear to the rescue, " his mouth doesn't move.
Audio problem: During the pizza planet scene, when Woody is running and saying, "There's a special ship I just saw!" his mouth doesn't move.
Answer: Baby face taps RR TOYS COME OUT. Telling the other toys to come out from hiding. Pixar stated this in their Toy Story character overview.
But why "RR"?
"RR" is shorthand for "Message Received." Babyface is telling Woody that he understands Woody's problem and then taps out to the other toys to come out.