kuh kuh
Battle cry by those who mean business.
The white male leaped off the balcony prepared for action. The enemies feared when they heard his "kuh kuh" cry from the skies.
Shay-kuh, shay-kuh, shay-kuh, shay-kuh!
Da "uh-uh" response dat someone gives by swiveling their head back and forth several times.
If someone is less than intensely-vehement about declining whatever is being requested/suggested, he may just silently perform da "shay-kuh, shay-kuh, shay-kuh, shay-kuh!" routine, rather than resorting to da more-noisy lips-spluttering dissent like he would if he was acutely distressed/horrified at said proposal.