Place it at the end of a short stealth or reveal sequence, just as the trick becomes clear. Follow it with the Bruh sound for a deadpan reaction from the person who was fooled, or open with Goku Drip to set up an overconfident anime-style entrance before the claim.
About this sound
This is a short Portuguese voice clip, about two and a half seconds long, in which a young voice proudly declares himself a ninja kid called Kalec. The delivery is playful and boastful, with the swagger of someone showing off a secret skill. It feels cheeky and light-hearted, like a quick joke between friends, and lands best as a sudden, confident announcement.