Ring in Drink Proposal

Someone, puts a ring in someones drink, usually as a means of proposing, or because he was a waiter that was bribed to do this by the proposing person. Bonus points if the person that has the ring in his/her (usually her) drink chokes on it.

Live-Action Television

 * In How I Met Your Mother, some unnamed person tried this. The drinks were served to the wrong people though (Robin and Ted, Robin got the one with the ring in it.)

Western Animation

 * In The Amazing World of Gumball Penny chokes on a ring when Gumball tries this.

Web Animation
In the Cyanide & Happiness Show, episode 2 season 1, someone does this, but is annoyed that someone else in the same restaurant does it too.