C is for Coitus Interruptus

Coitus Interruptus is the proper name for the ancient birth control method of 'pulling out' or 'withdrawal'.

In this method a penis is removed from a vagina PRIOR to ejaculation.  Ejaculate can then be directed elsewhere, largely reducing the risk of insemination.

Coitus Interruptus is not considered a 'safe sex' practice as there is much room for error (in comparison to other contraceptive methods) and it does not protect against STI/STDs.

Further more there is a slight chance of impregnation with pre-ejaculate.

Image credit:  Lending Memo

Image credit: Lending Memo