Why not just drop it and let it bounce a couple of times? The joke he is perpetrating is so enormous that if he allowed himself to laugh he might burst. Recognize you cant do it perfectly. It wont just happen by wishing it. And to tell it.
He is not going to burst.
( z0 burst :ARG1 ( z1 he ) :polarity - )
(z0 / burst-02
    :ARG1 (z1 / he)
    :polarity -)
He is not going to burst .
z0 :polarity 0
z0 :ARG1 z1