Top definition
The opposite of awesomesauce. Similar to weaksauce's relation to strongsauce.

Awfulsauce is getting black olives in your wrap when the menu did not mention black olives. Also, when Sonic advertises 99 cent coney dogs but they charge you something like $1.50
Playing Guitar Hero on medium is awfulsauce
by MPW-Buddy Holly May 10, 2008
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