How can I be a better trash talker?

You need a good vocabulary. Be original and clever Ali was the greatest trash talker of all time and he didn't resort to dirty or vulgar words. Doing that is cheap and lame and anyone could do it.

tell them you hope their mother gets raped and dies of breast cancer so she feels like less of a woman when she's on her deathbed

Take any flaw even the most minute flaw and blow it up in their faces the lower bellow the belt you hit the better.

tell ur opponent his momma's so fat u took a pic of her last xmas and its still printing today.

Alcohol....it brings out the best in everyone. Ding ding ding

Claim to be the A side... That should work...

Take a class at your local community college. You should get lots of material to work with there..

Alcohol....it brings out the best in everyone.

Start with taking the d1ck out of your mouth ... Lol just playing homes

watch some AB vids

Make fun of their clothes