How to filter rows that contain specific text from entire DataFame and not just one column?

Let us say I have a DataFrame that looks like this:

I want to create a filter that will return all of the rows that contain the name "Bob". Other suggestions for a problem like this specify a column to look for the word Bob, but I need it to check the entire dataframe for the name Bob and return the rows that contain the word Bob in any of the columns. Like so,

As you can see, I only want the rows that contain the name Bob in any of its columns.

I do not want to need to specify what column the code should look into because the column names can change. Is there a way to do this without writing out every column name into the code and simply have it check the entire dataframe?