I dont tend to tell DD things are things when they arnt. BUT... I do tell her vegetables give her super powers (depends on the veg to what super power).. lol She likes to tell other kids that brocolli makes you run faster!!
We do similar.

Have a real issue with deception in food (in fact it is a real bug bear of mine). Mostly to do with what was done with me as a kid and a teenager. Will keep quiet now