Tanaka Spinal Cord Sword appeared as a weapon in the first episode of Part 2 of the manga Chainsaw Man.
ラーメンの日 means Ramen Day. On July 11, ramen restaurants in Japan host all kinds of events to boost the influence and consumption of ramen.
とらのあな is a famous chain of doujin shops operated by 株式会社 虎の穴 (Toranoana Inc). On July 5 it announced that multiple shops are closing this summer.
通信障害 means a communication error, and 電波障害 has the similar meaning. au回線 refers to the network service brand au marketed by KDDI.
年金3割カット means a 30% discount to pensions. A politician MOTEGI Toshimitsu said that on a live discussion on NHK.