Slang term for taking a crap/poo.
Oh Shit! Im going to explode! I have to go to the bathroom and Do the Neil.

Hes been in the bathroom for a long time, I think hes Doing the Neil.
by Phillip J. Dougan October 16, 2006
Get the Doing the Neil mug.
When someone goes to extreme measures to get someone they loves attention
Bryan - Hey did you hear about that nutter who climbed on my roof and tried to climb through my window just to see if i was awake?

Sam - Ahh that guy must have been totally in love with you to be Doing A Neil
by Recycled Plastic June 25, 2010
Get the Doing A Neil mug.