Square peg, round hole

We were sitting in church listening to the pastor talk about the upcoming men's retreat, which would include a camp-out, four-wheeler obstacle course and the like.  They would also be giving away a 12 gauge shotgun.

Ann:  "Oh, wow, I'd really like to have that [gun]..."

Holly looks at Ann, clueless as to why she would like to have a 12 gauge shotgun and unsure as to whether she understands that she would have to attend a men's retreat to win it.
Holly:  "They're talking about a men's retreat."

Ann:  [shaking her head "yes"] "I know, I know.  I wouldn't fit in."