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1.
A small child walking into it's parents bedroom to find out what the noise is
children are the best form of contraception
by PGTips April 10, 2006
 
2.
used to prevent pregnancies
use contraception when you have sex
by todd08 April 17, 2005
 
3.
The sexual act of talking about the video game Contra, so that the woman that you are having intercourse with will get bored and will remove your penis from her vagina before ejaculation to avoid pregnancy when you are unable to remove your penis yourself.
Bill was having sex with his girlfriend, and was about to cum. Lucky he was able to use Contra-Ception to have her pull him out because his hands were stuck.

Or

Tom had his hands handcuffed to the bed, so he Contra-Ceived his girlfriend so that he would not cause a pregnancy.
by Chuck the Old Man January 10, 2011
 
4.
Always use contraception. There are different types.
Use ribbed for extra sensations
Use flavoured for oral pleasure!
by hayley! October 28, 2004