it means 'something'
Come, I wanna show you summin.
by przemyslaf November 27, 2006
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A guy who gives a fuck to anyone who realize his hair cut
Summin, "UmUmUm"
by Dman1012 March 9, 2016
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Babe: Oh my god your making me cum!

Me: oh my god babe your summin me up!

Babe: ...
by lil Sum up November 7, 2018
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Going online to find a date/wife/hookup.
Aaron went onto columbiancupid.com and was order'n summin up and she is suppose to arrive next week with her kids and grandkids.
by Andrew420 December 16, 2011
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