This is the 5001st most frequent Polish word.
popisał
"Popisał" means "he/she/it wrote" or "he/she/it showed off" depending on context.
In this sentence, 'popisał się' conveys the idea of showing off or demonstrating one's abilities or knowledge in a social context.
Andrzej popisał się swoją wiedzą o historii.
Andrew demonstrated his knowledge of history.
Here, 'popisał się' indicates presenting a skill or talent, in this case, drawing, in a way that garners admiration.
Wczoraj Janek popisał się pięknym rysunkiem.
Yesterday, Jack impressed everyone with a beautiful drawing.
In this example, 'popisał' refers to the act of writing one's name, emphasizing the physical action rather than impressing others.