Acronym: LOLCODE Source Code FIle
Opens With: LOLPython, lolcode-dot-net, any text editor
Source code file written in LOLCODE, a programming language inspired by "lolcats" images; contains source code that uses slang syntax and keywords such as HAI (for "Hi" or "Hello") which denotes the beginning of the program, and KTHXBYE (for "OK thanks, bye"), which signals the end of the program.
NOTE: LOLCODE is referred to as an "esoteric programming language" since its syntax is considered humorous. It is not a robust language such as C, C++, Java, or Python. Therefore, it is usually used for writing simple proof-of-concept and hobbyist applications. LOLCODE is popular with some hackers communities.