Yup! My 4 year old wants my MF stuff too! Thinks she's missing out! I let her have a few sips now and then, but I'm positively stingy about my bar! (Do you know how BIG a bite a teeny tiny 4 year old can take!! !!!)
Funny story- This past weekend we took her and her cousin (also 4) to the zoo for Halloween activities... they got candy during the day. Around 5:00 I was eating my peanut butter MF bar, and she told her cousin, "it's okay, she's not eating our candy that's her diet stuff!" Her cousin thought my bar looked just too good I guess!