I heard this one in a documentary about foot fetish.
The woman who produces fetish videos says:
A lot men like feet. But you can only do so many of them.
What does this mean? I googled but couldn't find any idiom like this. I found however similar usages, like:
"You can only do so many bar crawls. Get some culture into your
life,…" "You can only do so many tasks at one time, so it makes
sense to focus in on what is really required." "You can only do so
many movies in a certain time, so I've acted outside of those ones
too. So, it wasn't really that big of a thing."
Thank you.
Best Answer
so many X often means "a limited number of X".
means that you cannot probably do all men that like feet. There's a limit.
Here do means have sex with.
Update: Considering the comments, however, it now seems far more plausible to me that she's talking about foot fetish movies, rather than men. So she is saying that although a lot of men like feet, you can only make a limited number of foot fetish movies.