Top definition
A troublesome thing to accomplish
Something hard or a pain to do
Man, building that deck was quite the rattlemouse!
by Brandoniron February 26, 2013
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Jul 22 Word of the Day
Short for ultimate bias. Typically used by fangirls and fanboys to describe their favourite celebrity amongst the many that they are fans of.
G-Dragon is my ult
by Uglycat February 19, 2017
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