When a woman tries to drunk rape you. You stick a lit stick of dynamite in her vagina and yell "Cincinnati Switch!" and jump out of the nearest window.
by Kansas City Shuffler December 7, 2010
When two male parties consciously decide to switch female companions at a finite point in the evening.
Jonathon was macking on Susan Friday night. However around midnight there appeared to be a Cincinnati switch as his friend Esteban moved in for Susan, and Jonathon decided to game on Susan's friend Mary whom Esteban was previously chatting with.
by twppinainteasy April 8, 2011
When one gentleman is performing doggy style sexing whilst another gentleman is receiving felatio from the same female participant the Cincinnati switch occurs when the men trade places, the gentleman in the rear simply removes his member and grasps it with his hand thus transferring the remaining excrement the men then perform a high five thus the second man receiving the excrement and using it for lubrication. I give you the Cincinnati switch ;)
by Dr David dee dinkleman.m.d April 25, 2017