"Well you see, it's actually very reasonable and intelli-" manages Foaly before the grin he's been restraining breaks out into feverish, uncontrollable laughter, which, as he runs out of breath, rapidly devolves into altogether-too-pleased-with-himself wheezing.

Artemis has had his arms crossed for some 20 seconds before Foaly finally gathers himself well enough to manage, "I think I've done you a favor here, you know that? It's not like anyone ever going to expect you to actually be dangerous after this."