Disclaimer: B5 and all its characters are owned by the Great Maker and his associates. I just take them out for air every so often, for entertainment, not profit.
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"John, wake up!"
"Hhmpphh..."
"Wake up! David is making a strange noise!"
"Wha.... okay, um."
"Listen!"
The audio monitoring system took that opportunity to be silent.
"Honey, I don't hear anything—"
"thbthbthbt!!! thbthbt! Bbbbbb!"
"That was it – what is that noise?"
"What, you mean this? Thbthbthbthbt! It's called a raspberry. Babies just do that."
"Human babies, perhaps. I have never heard a Minbari infant produce such a noise."
"..."
"And why do they make that noise?"
"Huh? I guess it's fun for them or something, I dunno. Look, can we go back to sleep?"
"Fun? Hmm... Thbthbthbt. Thbthbthbt!"
"Delenn!"