In the basic refbook at apocalypse-world.com, go aggro reads as follows:
"When you go aggro on someone, make it clear what you want them to do and what you’ll do to them. Roll+hard [...]"
In the preview pdf of the 2nd ed book, it has the old reading:
"When you go aggro on someone, roll+hard."
Is this a mistake, or has it been updated again after that refbook was posted?
Also, in 2nd ed, the reading moves say to ask 1 anyway on a miss (and prepare for the worst, i.e. MC move). However, the examples of play for both in the book include an example of a player missing the roll, and only getting an MC move in the face immediately, without asking a question. Maybe the player gets to ask a question after the example ends, but that isn't very clear. If the intention is that the MC can do as in the example, and simply forgo the 1 question, then that should be clear.