Some good ol' fashion racism, if I were to guess Dungheap, goldenrod, snowman etc would be fitting, not to mention having your enemy make fun of your skill and how you move. Also The insults from that daedra in MW that someone have metioned
I'd like some (in game) racist insults. Altmer would just hate on everyone. "Lesser scum!!". And obviously there would be a lot of tension between the Argonians and the Dunmer.