The act of a gay man taking a piece of white bread, placing his penis and balls on top of it and spreading mustard or mayo on top of it, than taking another piece of white bread and placing it on top. Than inviting another gay man to chew upon it gently while sucking the condiments off. This must be performed in illinois for the full effect to take place.
Gay man: 'God Josh gave me a DELICIOUS sandwich last night!
Friend: An illinois ham sandwich?!?!
Gay man: " OH YES!!!
Friend: An illinois ham sandwich?!?!
Gay man: " OH YES!!!
by ballsack224 January 6, 2010