It means "being sticky, so it makes someone frustrated".:) It's not the standard, I think it comes from "안기다". 안기다 > 앵기다 > 앵겨대다 > 앵겨대 \^o^/

The verb 앵겨대다 comes from "엉겨(엉기어)-대다", the word '앵겨대다' is a dialcet. And the verb 엉기다 means to cot, congeal or to stick/cliing to (something/someone) (무엇에 달라붙다)". and the verb 대다 means to do/act something continuously, again and again. 엉기다. 엉기어 대다. 엉겨대다. (standard) 앵겨대다. (dialect)

ㅎㅎ 껌딱지처럼