I found a book, 101 Word Games, by George P. McCallum. It is a book of games to play with English learners. Cool, I thought; it might be useful for working with tandem partners.
Then I read the rules of one of the games called "Compliments and Insults," in which students ask one another why they like Marion and hate Jim (for example). Under the possible answers for why one hates Jim, it includes such niceties as "Because he's awful. Because he's boastful" (p. 113).
Uh, I can't say that this is an activity I'd want to replicate! Could you imagine, telling a class to say all these mean things about another student (or someone else they don't like)? Or, could you imagine a student who likes Marion and might not know that it's appropriate to say that one likes her because of...who knows what!
McCallum, George P. 101 Word Games for Students of English as a Second or Foreign Language. New York: Oxford UP, 1980. Print.