But hey, most of the time it's more amusing than anything and nothing to get excited about. One recent such popular phrase is "my boom" (マイブーム・mai buum) and that phrase is used to express some recent trend, food or basically anything that you have gotten into lately. It could be anything from Tom of Finland Art, C64 retro gaming, reading up on the life of Dennis Nielsen or any other perfectly normal interest.
My recent "My boom" is this 貝入りラー油 which is basically Chinese Chili oil, but not only the oil, it also includes plenty of chopped garlic, red peppers and stuff mixed together with the chili oil. If you like spicy stuff and garlic, this stuff is amazing. There are hardly anything that it doesn't go with and Mrs. Sunshine-Salaryman, who cannot really handle too spicy food, has now given up when I mention "you know what would go really great with this?" and just sighs as I got get my chili oil stuff. Put it on some plain rice and it'll make it sparkle. Check it out here, you can even get my favorite stuff outside of Asia, let it boom all over the place!