Translating puns is always clumsy. I also checked the artist's twitter (source link) to check if this was the intended reference. If anyone can improve this, please have at it.
Yes, it's a Hentai Kamen quote (それは私のおいなりさんだ). Orinari-san does mean a type of food, but it's also a slang word for "scrotum", thus the joke.
Inarizushi, so delicious ♥sushi in fried tofuI'm gonna have another!Hey you people!They're my oinari-sans!
Obviously the quote is related to Kyuukyoku! Hentai Kamen's recurring, running gag: Every bad guy who appears in the manga mistook Shikijou Kyousuke's testicles for inarizushi.