Clipping of 一般相対性理論 (ippan sōtaisei riron, “general relativity”).

iron plate; hotplate; sheet iron / (informal) a guaranteed thing

(Internet) mukbang

for all audiences (due to non-sexual content)

Saipan (an island, the capital of the Northern Mariana Islands), once part of the Empire of Japan

Short for チンパンジー. / (slang, derogatory) person like a chimpanzee

a type of panty that is worn by tying together strings on the sides (as opposed to normal panties which simply have a waistband)

the act of going commando, wearing regular clothing except without wearing underpants or panties

marzipan

Clipping of トレーニングパンツ (torēningu pantsu, “sweatpants”).