The study focuses on the undergraduates’ academic performance and influence from YouTube. Non probability convenient sampling method has been utilized to select the sample. The sample included 60 undergraduates from a leading higher educational institute in Sri Lanka, representing three faculties (Business, Engineering and Computing). To collect the data, both quantitative and qualitative methods were used (in-dept. interview & questioners). Based on past literature, conceptual framework is derived. Through the indepth interview, reasons behind the excessive usage of YouTube are found.