Middle aged man on a flying trapeze

Robert, normally a fairly talkative individual, almost always finds that airport security checks causes him to communicate in sign language.

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Airport security official: Mind if I look in your bag, sir?

Robert: (gestures with a twist of an outstretched hand) Mmm.

Airport security official: We'll have to take the computer out and put it through separately.

Robert: (gestures with an uprising wrist, palm open upwards) Uh.

Computer passes through scanner

Airport security official: There you go.

Robert: (loads computer back into pack) Mm.

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Voiceover
Robert does not reduce his communication consciously or deliberately. It is almost an instinctive defence mechanism kicking in.
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