Other - we use a flavored lube once in a while. If I'm giving what is basically a HJ with some oral I'll grab a flavored lube or when he plans to do a lot of oral along with a penetrative toy that is girthy and/or has quite a bit of drag to the material.
I think there are much better ways to "spice things up".
I am too sensitive for flavored lubes. The ingredients just don't mix well with natural ph. also i prefer nothing to interfere with a persons natural taste.