68er 

A person - typically a man - who wishes to receive oral sex so he tells the female he will perform the act on her as well, in order to convince her to give him oral sex. Once she has given him oral sex he declines to give her oral sex, and either proceeds to regular intercourse or says, "I owe you one," while never intending to give her oral sex. This term can also be used to describe a partner who gives quick and insufficient oral sex, short-changing his partner. Based on the sex position "the 69" where both partners give and receive oral sex simultaneously. In this case since one partner got an "I owe you one" it is 69 minus 1 or 68.

Person One: "Never date that guy! I heard he is a 68er!"
Person Two: "Believe me, I won't. 68ers are the reason so many women are enjoying lesbians."

68er by BombACat July 18, 2010

68er 

same as the 69er except the man doesnt give the women head. he in turn owes her one to make it 69

woman) you wanna 69?
man) nah lets have a 68er....we will make it 69 later

68er by Evan9 June 25, 2006

68er 

As per a 69er, except when going down on your bitch you tongue her arse in error.

"man, did you use shit for toothpaste?"

"Ah bollocks, I had a power cut last night during oral sex and ended up giving her a 68er.

68er by Willie English August 11, 2009