Does some stretching?

LIES

Think of what someone might do on a couch when they're not being completely truthful, or how a story can bend over time.

The clue plays on the double meaning of "stretching." One sense is literal, like pulling or expanding something, but here it hints at the figurative kind—exaggerating or bending the truth. "Lies" fits because telling lies involves stretching the truth beyond its actual limits. The wordplay relies on interpreting "stretching" as deception rather than physical movement.