Top definition
A person who's a complete and utter genius but refuses to admit it to the point that it gets annoying but by then it doesn't really matter anymore cos Wei-Sums are usually good friends ^^
You: You scored 100% in that exam??? You'll be a Wei-Sum at this rate!
by Salsa12335 October 20, 2008
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug