And they weren't impressed

This morning on the Dermot and Dave Show we got a Snapchat off a woman called Catherine.

She told us the hilarious story about her son David, who didn't know what a Phonebox was.

Don't believe us? Have a look at the snap below.

This got us talking about other stuff that younger people don't remember, like the old-school mobile phones.

Feel old now? I bet so!