Does the RCC permit Catholic laity to answer exegetical questions (i.e., interpret scripture) on a forum or website?

For example, suppose a forum member asked, "What is the meaning of the phrase 'this mystery...which is Christ in you, the hope of glory' in Col. 1:27? (You can replace this with any scripture, the point being that the forum member is asking for the interpretation of scripture, or a phrase therein.) Is a Catholic layperson (laity) permitted to answer such a question, and therefore interpret scripture? If so, what guidelines must he/she follow when interpreting scripture (i.e., answering a question asking for the interpretation of a scripture, or a phrase therein)? **Primary reason for the question**: I get the impression that the interpretation of scripture is reserved for the magisterium. If so, wouldn't that also prohibit or restrict the laity from interpreting scripture on blogs, forums, and websites?