Newbie - I forgot your name

Now, we know that when names consist mainly of a medley of Xs, Qs and Zs, it can be easy to lose it under pressure. So, when that friend that you just ran into is looking into your eyes with an anticipative look, you might just, understandably, come up short. This situation affords two choices: calling them Li Xiansheng (you just could be right!), or listening in to this podcast, so you can learn how to 'fess up that you've forgotten someone's name, in Mandarin Chinese.