The definition of Double Talk is a language which seemingly has a meaning but in actual fact is absolute nonsense.
Trivia
Double Talk along with Bounce Check are the strongest attacks used by level seven cogs, because when a Double Talker at level seven performs this attack it is capable of causing 18 damage to a single toon.
The only phrase associated with this attack is "Take a memo on this!".
The phrase "Take a memo on this!" is also the only phrase used for the attack Fill with Lead.
When the attack is performed by a level four Double Talker it does the exact same damage as when a level three Double Talker performs the attack.
The words in Double Talk are Gesture, Goodwill, Indemnity and Double.