Add the letter G and it’s “gone”!
The G
Automobile.
He stopped at 239 because if he added another one it would be 'too farty'. It would've been funnier if I could do an Irish accent.
They're taking away functions, and there's no escape.
Pho fo' fo' at fo'
He had only one 'i'
Because
Let's get rational you can't carry on like this!
Envelope.
An Envelope EDIT: My deepest Canadian apologies to those who are calling this a riddle. I always took it as a cheesy joke