引用:
原帖由 Q太郎~~ 於 2009-7-16 01:02 AM 發表 
肌肉收縮, 痴實左呀
Sidetrack a bit, narrator Cherry pops up
In the nature, some animals like dogs do have mechanisms to prevent from losing the "attachment" for some time, in dog case ( 30mins to 60mins)
It's to make sure their sperms won't have any competitors in the next 30-60 mins
