The tweet mentions the emotional roller-coaster of being a pentester when encountering a WAF. It highlights the excitement of finding a vulnerability, frustration of encountering a WAF, happiness of finding a bypass, and sadness when the bypass is considered out of scope. This tweet emphasizes the challenges and emotions pentesters face in their work with WAFs. The specific details of the WAF or bypass technique are not provided in the tweet.
For more details, check out the original tweet here: https://twitter.com/devsecurely/status/1836668179222851835