the term used when someone is so desperate for notoriety on Urban Dictionary that they are willing to make up a word and definition for that exact purpose.
Aekkum is an adjective. The word is derived from two words Aek and kum. Aek means 'one' or 'once' in Hindi, while kum means... you know... Now, literally, the word would means cum once. But actually, it means someone who cums in 1 second!