You might well ask.
Tartle is a wonderful Scots word that has no literal translation in English.
Have you ever tried to introduce two people, and forgotten one of their names? Oops, you tartled!
If you're a stinky rotten tartler, follow this advice at your next networking event:
1. When you shake someone's hand on first meeting, repeat their name twice to make it stick. This can go wrong. A man I tried this on thought I shared the same name as him, and he started calling me Rod.
2. If that doesn't work, try word association. For example, if his name's Adam, try to imagine him in the garden of Eden, naked but for a fig leaf.
3. Ask for a business card. Note that this doesn't work so well at social gatherings, as they'll think it's a come on.
Judging by the looks on their faces, this guy probably just tartled