This is a trolls main weapon. Most trolls are not very good debaters or have very good or compelling arguments, so it's of outmost importance that they are well versed in obfuscation instead. This is mainly noticeable when their "opponents" say something that has even the slightest chance to be misinterpreted. So even if this misinterpretation is the most far fetched on can think of, it's naturally the only valid way it could possibly be interpreted according to the troll.