Incomprehensible language.
A game of jump rope with two ropes and frequently two jumpers.
A language game akin to pig Latin.
Sex using a condom and the contraceptive pill at the same time.
A simple phonetic code with a regular infix that makes meaningful speech sound unintelligible.
Speech which combines English (or some other language) and native-sounding gibberish for humorous effect.
Doublespeak.
Lies, especially in a formal political statement.
A situation when two people talk at the same time, causing overlapping audio signals.