F

farty The number between Thirty and Fourty 
From babycenter.com

fasalon Thanks a lot
Submitted by Alice Walton

fetchyou Thank you
From mothering.com

flobbles Individual fruit pieces found in yogurt.
'This yogurt has flobbles in it!'
Submitted by George Leaney

flutterbyes Butterflies
Submitted by George Leaney

flurry Flower
From babycenter.com

froclate Chocolate
From mothering.com

fuculator Calculator
From babycenter.com

fuff-fye Butterfly
From mothering.com

fulla Flower
Submitted by Diana Barnes

funny 'orse Llama
Submitted by Beth Gregory