Anchor: Terms such as yadda yadda yadda and blah blah blah have a special utility when the speaker's audience can accurately fill in the blanks--when the terms act not as synonyms for generic talk but as command keys, cued to circumstance, that can designate specific information.
Entailed: Terms like yadda yadda yadda have a special utility.
Contradiction: Terms like yadda yadda yadda are completely useless.
Contradiction: The men are playing a tennis match.
Contradiction: A woman is filling a bag.
Contradiction: A young boy is fast asleep.
Contradiction: A lady in a top is petting an animal.