### Clue: Woman's knickers (swapping never ends!) and where they're thrown? (3,7)
### Answer: HEN PARTIES 
 ### Explanation: Definition: where they're thrown
 HEN (woman) + PANTIES with N replaced by R (the "ends" of NeveR) *Thanks to Eileen for pointing out that it's actually HER PANTIES with the N and R swapped)