child 1:whoa that kid has a huge chin hahahahahahaha what a dork  child 2:you know, you shouldn't laugh that kid has big chin syndrome
a person that has a very ab-normal sized chin
"child 1:whoa that kid has a huge chin hahahahahahaha what a dork  child 2:you know, you shouldn't laugh that kid has big chin syndrome" What is the definition of "big chin syndrome"?