Many of the characters in BFDI, depending on the object, have had their own 'OMG' moments in which they state "Oh my" and then something relevant to their "God", which is something related to their object form, like for Pin, her "god" is a Pin Factory, which created her.
Spongy is yet to have an OMG moment.
Blocky is yet to have an OMG moment.
Woody is yet and probably never will have an OMG moment.
Teardrop probably never will have an OMG moment since she can't talk.
Golf Ball is yet to have an OMG moment. But if there is one, it might be: "Oh my dimples!" or "Oh my Place Where Golf Balls are Created" or for short "OMPWGBAC!"
Coiny's OMG moment was said twice as "Oh my Mint!"
Snowball's OMG moment was said at the biggest and final rejoining ceremony of Season 1 as "Oh my Snowflake!"
Match's OMG moment is "Oh my Wood Sickle!" though this is unsure of and vague, especially as she said before "OMQ".
Eraser is yet to have an OMG moment.
Pen is yet to have an OMG moment.
David is yet and probably will never have an OMG moment, as he is usually seen saying his only his catchphrase "Aw, seriously?"
Pencil has an OMG moment, and it is "Oh my Tree" because wood comes from trees, and Pencils are made with wood. It has been used twice in both the BFDIA 6 Deleted Scenes video as well as Welcome Back.
Rocky was planned to have an OMG moment but then jacknjellify decided to take away the ability from him to speak. It remains unknown.
Bubble's OMG moment is "Oh my Bubble Blower!" sometimes shortened to "OMBB!"
Leafy's OMG moment is "Oh my Tree!", used once.
Firey's OMG moment is "Oh my Oxygen!", used once.
In BFDI Is Back, he used "Oh my spark" once for his OMG moment.
Book's OMG moment is "Oh my Word", used twice.
Fries' OMG moment is "Oh my Potatoes", used twice.
In Welcome Back, Fries's other OMG moment is "Oh my tater", used once.
Gelatin's OMG moment is "Oh my collagen", used once in a video including BFDIA 6 deleted scenes.