Granny Dip 

A Granny Dip is when the penis is removed from the vagina during sex, either accidentally or on purpose, then quickly inserted into the anus and then back in the vagina to continue with straight sex.

"I was banging her pussy hard till I felt like a bit of a granny dip; she strongly objected."

or,

"Granny dip my arse, dip it, DIP IT!"

Granny Dip by Phillip Beale September 26, 2007

granny dipping

1. Having sexual intercourse with an extremely old woman.

2. Nasty dirty old person sex.

Mitch: Omg dude. That chick you had sex with is like 53!

Derrick: Is that wrong.

Mitch: Yes... Granny dipping is wrong...

granny dipping by I_AM_THE_CLIT_COMMANDER February 15, 2008