I'd thought of a pun

but I've forgotten it

[Desi]

Well drat. You're not much good are you, leaving us hanging like that. That looks like a pretty cool Magnum

[Annie-Sue]

@seacreature and it was a good pun too! As was the Magnum - tho' the advert on tv suggests there are lines of colour in the icecream - and I didn't see them!