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1.
Receiving a blow job while being extremely high or in space
I got supa high and when i got home my bitch ga'me some astrodome
by willyt248 February 05, 2009
 
2.
A penis that's wider than it is long; a chode.

Because a chode is kinda shaped like the Houston Astrodome or any similar-looking stadium.
Even though I can't fit it into her ass or pussy, my girl really loves to suck on my Astrodome.
by Mark H September 17, 2004
 
3.
n. an amazing blow job received in the state of Texas or from a girl who hails from the state of Texas.
All I want is some astrodome! Is that too much to ask?!
by Paul Bryant January 14, 2007