From browsing through a database of runic inscriptions you get timeless stuff like:

Ingibjǫrg loved me when I was in Stavanger.

Smiðr fucked Vígdís §B of the Snelde-legs (ie, the Snelde-legs folk)

Back then some guys had high thoughts about themselves:

”§A You will fuck Rannveig the red. §B It will be bigger than a mans prick and smaller than a horses prick.”

Proto-gamers would use the "Ur gay" retort:

”§A How did that statement which you carved in the Church of the Cross sound? Well(?) it is then(?) §B Óli('s rear) is unwiped and (he is) fucked in the anus … that sounded good.”

Female anatomy seems to have occupied a large part of the minds of Norse writers:

”§A … §B Prick kiss the c*nt, kiss!”

”§A Jón Silky-c*nt owns me, and Guðþormr C*nt-licker §B carved me, and Jón Ball-c*nt interprets me.”

”§A Monstrous is the c*nt, may the penis serve. §B C*nt-perverse/nymphomania …”