winging it: to improvise with little preparation e.g. I'll ask him, but it sounds like he's winging his answers (ie. .... and he's not near it or able to ask them questions right now).
There's a software called Visual C++ Redistributable, the file name is "vcredist". Some ppl thought it's v+credist. I believe it's because there are so many words that begins with "cr+", so ppl naturally think it's a world that has "cr-", rather than two words "c" and "r-".