While getting a blow job (from your lover, of course), as soon as you cum in their mouth, you tickle them hard under the armpits making them sneeze/choke, making them blow the load out of their nose that you just blew in their mouth?
Yo Steve, it's me Larry.
What's up Larry?
Not much. Just thought I'd give you a call to let you know that your mom blew an Albuquerque Achoo all over my coffee table.