and then I fucked your cousin 

1.A phrase used at the end of a story that had really no point to be told to someone. Often, it is used at the end of a boring story to make it seem more interesting and worthwhile. Alternate versions of this phrase include "and then I found five dollars" and "and then I kicked a hobo", however, this phrase emphasizes how we are all really "cousins" in a universal context, suggesting that it is ok to fuck your cousin.

2. Often used as a true statement.

Max: Everything was great! We were all getting drunk, having a good time... and then I fucked your cousin...
Pedro:Well, at least your sister is now up for grabs...

and then I fucked your cousin by The Gerb May 18, 2010

And then I fucked your cousin 

A phrase used at the end of a rather boring story to see if the listener was truly paying attention.

Person 1: "..and then I went to the mall to get these oh-so fabulous shoes, and then..."

Person 2: *Snores*"...."

Person 1: "And then I fucked your cousin."

Person 2: "Wait what?!?"

And then I fucked your cousin by Therapist420 February 21, 2014