The shelf / Easy / Japanese

JAPANESE

朝飯前 (asameshimae)

“Before breakfast.”

MEANS

Very easy. Done before you've even eaten.

Source: Wiktionary, JMdict dictionaries, Shogakukan (Kotobank).

On the label: A piece of cake

Watch it

The film: “Easy is cake. Unless you speak Japanese.”

The same idea, elsewhere

From “A piece of cake” to Japanese.

ENGLISHA piece of cake.The one you know.Ogden Nash, 1936 (OED, via ADS-L).
SPANISHSer pan comido.“To be eaten bread.”RAE.
JAPANESE朝飯前“Before breakfast.”Wiktionary, JMdict dictionaries, Shogakukan (Kotobank).