language skills

Conversation at work yesterday:

Boss (looking at a photo of a word) "What language is that?"

Me "Well, if it's spelled with a 't' it's Latin I think and if it's spelled with a 'd' it's Spanish. I think. I don't know."

Boss "You don't know?"

Me "Well I don't speak Latin so...yeah."

Boss "Well if you don't know, nobody knows."

Me "Hm, I think you severely over-est my language skills."

Boss "...?"

Me "Uh...over-estIMATE. Hah."