“He dresses in a certain oifen You can't miss him in a crowd.” (Weiser)
“He teaches in such a complicated oifen that he loses everyone in minutes.” (Weiser)
“If it's an oifen of self-defense, you can do almost anything to protect yourself.” (Weiser)
"There are more guys in the Mir wasting their time, in a less yeshivishe oifen, and being in a brisker yeshiva and becoming a brisker are not at all synonymous." (source)