If a boss or a superior calls you into their office and verbally recites to you series of assignments to work on, politely tell them you may need to get a pen and a note pad. If they decline and tell you to listen intently, do just that, and then go about working on the assignments afterwards. But, at any point you forget a piece of the assignment, go back and ask them politely to remind you.
Do not be scared or reluctant to ask with the notion they will perceive you as "not smart"; not asking and pretending everything is fine when outcome of assignment is poor is worse than being not smart.
Choose to rather have them tag you “not smart” than being called stupid.