I'm late but the cactus thing is probably because 'gashi' means 'thorn', and cacti have spikes. And ro-kku-ko is 'ko-kku-ro' backwards in Korean. Kokkuro means 'upside-down'. A lot of the lyrics of the song are words that can mean something else backwards. For example: su-bak = watermelon and bak-su = clap. It's hard to explain, but I hope you got the gist.
Golden Child will performance on 6/18 dream concert!! And they will have a USA live&meet tour since 6/24~7/11, and the summer stage of NY on 7/10 with Brave girls and Alexa is free to join. They also list on 7/30 London MIK festival~ Most important!! They might have a comeback after those schedule. JeongYup is woollim's CEO