The phrase "big bull" refers to a person who is very confident, boastful, and makes exaggerated claims about their abilities or achievements. Full definition
This is biggest bull market of my 43 years of as a trader. (newtraderu.com)
While the last big bull run in metals was due to huge growth in china, and supplies that were stretched thin, this next bull run has something else going for it. (venturecompanyassociation.com)
The latest one brings us a glimpse of the aptly - named Big Bull and clearly, he's in his element. (thatvideogameblog.com)