The first summer I lived in Russia Keith visited me for a few weeks. One day we were on a bus headed over to have a dinner at the house of 2 of my students. While on the bus we encountered someone having some difficulty communicating in Russian. It turns out he was a Brazilian missionary who had just gotten into the country. He spoke no English, and very little Russian. He was fluent in Portuguese and Spanish. I used to be a fair hand at Spanish but lost most of Enter Keith who was practically fluent in Spanish. We ended up inviting (I think my students were with us on the bus) him to join us at the dinner.
The dinner was a very unusual affair my student's Mom spoke no English, Spanish or Portuguese but was very interested in talking with the Brazilian. So here's what we did our host asked a question in Russian, I translated it into English, Keith translated it into Spanish. The Brazilian would respond and Keith would translate it into English and I would translate it into Russian. Talk about having to sing for your supper.
Keith really enjoyed being useful and a focal point of the evening.