Happy dust hangover

[evoluzioni]

Hello, while going through excerpts of Heinlein's novels I bumped into this one:
Podkyane from mars (postlude)

Maybe I should have stopped to disarm it as soon as I broke old Gruesome’s neck—and maybe Jojo would have caught both of us if I had and him still with a happy-dust hangover...


What could "happy dust hangover" mean?I cannot think of anything that makes sense...

thank you in advance

 

[Timba]

I am not stalking you but your questions keep popping to the front page and so...

Happy dust is an intoxicant of one sort or another.

Meant to mention that you can find a number of Heinlein's early works here http://www.baenebooks.com/?__utma=222178315.166353783.1305994635.1353595005.1353766417.283&__utmb=222178315.4.10.1353766417&__utmc=222178315&__utmx=-&__utmz=222178315.1334178435.155.4.utmcsr=ask|utmccn=(organic)|utmcmd=organic|utmctr=Poul%20Anderson|utmcct=/&__utmv=-&__utmk=244894598

if you have an e-reader they are nicely priced.