引用:
原帖由 Boynightout 於 2009-3-30 09:28 PM 發表 
1. 請問如果唔用套內射有BB的機會率是多少?
2. 如果用套呢?
3. 如果用套再加抽出來射?
4. 如果又用套又食避孕藥?
5. 如果又用套又食避孕藥又抽出來射?(應該係0掛:smile_41: )
1. depend on the time of the month. If it's in the middle of the cycle, most certainly will be pregnant. (don't know real percentage)
2. 97% safe if use effectively (written at the back of a condom package, i think... make sure air gets squishes out and hole the tip as you roll in)
3. 99% (provided it doesn't break before you cum)
4. 99.9% (a doctor actually told me this)
5. 100% birth control...?
