Katakana Friday Dosu(ドス). An alternative word for "Tantou(短刀🔪)=a short sword" commonly used by Yakuza. I often saw this word in Yakuza manga or films in the 80s and 90s like カシラのドタマこのドスで殺ったるで😈 Give me liberty or give me DOSU👹 #katakanafriday pic.twitter.com/BsUh0LFoc2

Katakana Friday Sekoi(セコい)=often refers to those stingy or penny-pinching people/actions. Not sure if this word can be understood by young generations. I used this word a lot when I was a K-12 student😅 Kechi(ケチ) might be more dispersed instead of SEKOI🤔 #katakanafriday pic.twitter.com/D6dySieAYM