ВЫ-

Perfective verbs with the prefix вы- are stressed on this prefix in all forms, including participles and nouns related to these verbs (eg, выбор 'choice' ~ выбрать 'to choose').

вот вырастет из тебя тупица you'll grow into a dim-wit

я выучил таблицу умножения I learned the multiplication table

вот если б тебя с места вызвали if you'd been called to answer from your seat

если тебя старостой выбрали just because you were chosen class leader