Much as I hate to nitpick this crackilicious scene, I can't help but wonder how Sue's and Flash's dialogue is so intelligible when their lips are locked together. A better panel breakdown would be: (Panel 1) Sue: You were incredible! How can I ever thank you?" (Panel 2) *Passionate kiss* (Panel 3) Flash: "Hmmmmm! You seem to be doing" etc.
An early Kurtzman MAD gag showed how it would really sound if two people talked extensively while making out: "Drlng nw tht I hld y n m rms" etc.