Definition
Our definition here is 'Maybe knock first?', and there are two tricks at play here. Firstly, 'maybe' (like 'perhaps', or 'say') flags that we should look for a category to which the rest of the definition belongs as an example. And secondly, 'first' almost appears like it's a selection indicator... in the definition... Lean into that! What might 'knock first' be an example of?