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The act or state of becoming immediately and undeservedly successful as result of walking into the right situation, specifically at the expense of someone else; excelling only by virtue of being in the right place at the right time, thus creating an insult to others who are more deserving
I really gillisleed that pop quiz in English I didn't study but it's my parents favorite book - ruined the curve for everyone.

I left my house keys at work and had to go back to the office to get them, the boss saw me and thought I was working late, looks like I gillisleed Jimmy out of that promotion.

Carl beating Blake is a total gillislee. The man knows nothing about football.
by Arapaho September 08, 2017
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