did Han Solo suck Greedo’s dick first, or did Greedo suck Han Solo’s dick first
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They both 69 each other at the same time one night when they got drunk at Jabba’s palace but never spoke about it again due to embarrassment
Lucas had to edit the newer versions to have Han reciprocate the blowjob in order to make him more likable.
Since Han shot first the logical conclusion would be Greedo sucked first but that doesn’t account the possibility that Han is just incompetent at sucking. You’ll have to look into legends to get the answer, there’s isn’t enough information to be definitive in canon.