Answer:
Hyperbole
Step-by-step explanation:
Hyperbole is a literary device used in speech to exaggerate words for added emphasis. Even though hyperbole, like simile and metaphor makes a comparison, it is always evident in the case of a hyperbole that there is an exaggeration of words.
This is the case in the question given. It is quite obvious that Okras do not have a resemblance to daggers, but by the speaker exaggerating the function of Okras to daggers, he was trying to stress the destructive powers of the Okras.