The squeak comes from air forced through a small reed inside a squeezable rubber or vinyl pet toy, a design used for dog toys for decades. Short recordings of that single squeeze began circulating on soundboards and in video editing packs as a clean, isolated effect with no background noise. Editors adopted it for pet clips, reaction memes and family videos because viewers recognise the noise instantly, even without seeing a toy on screen. Its brevity and high pitch keep it popular for quick comedic timing on social platforms.