Place it right after the boast or lucky claim in your edit, so the reaction lands on the punchline rather than before it. Follow it with the WhatsApp Message Sound to suggest the chat keeps going, keeping the focus on the claim that prompted the reaction.
O tym dźwięku
This short spoken clip, lasting about three seconds, pairs the slang word sus with mashallah in a single quick reaction. The contrast between suspicion and praise makes the line work as a joke rather than a serious comment. It gives listeners a feeling of amused suspicion, as if something impressive has just been called out for looking too good to be true.