Top Definition
for a girl to look so hot at a certian point in time of the night or day where she is just so hot you have to stop and just look at her. in public or even your own girlfriend.
like if a girl is in a nighty or t-backs and a cut off wifebetter with her nipples all hard dam thats lustacious
by Derek Post June 02, 2007
5 Words related to lustacious

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