rammiversary 

The anniversary of the day you first had sex with someone. Typically celebrated by having sex with them.

Hey, did you book the hotel for our rammiversary yet?

rammiversary by ceclair October 17, 2012

ramaversary 

the anniversary of the first time one rammed another sexually and/or was rammed.

Me and the old lady are celebrating our ramaversary this weekend, I gave it to that broad like it was my job!

ramaversary by GlazeHer July 1, 2014