What's the most overused yet still such an effective technique?

For me its Name-flipping. Since pinasikat to ni BLKD, this technique has never gone old, kahit sobrang gamit na gamit pero never lumaylay. I think siguro din why it's still so effective is because there are times na mas madali makain ng crowd pag pangalan gamitin sa emcee for their wordplays since wala naman makakagets pag minention past battles nila or personals esp if unknown emcee kalaban, add mo pa yung madali siyang makain ng tao pag witty pagkagamit mo.

Pero what other styles that you find very common na gina-gamit pero super effective pa rin?