Like sneezing?
Using thumb and forefinger, pull out a small clump of nose hairs. Just grit yer teeth and do it.
A good cluster of sneezes is practically guaranteed, especially if you stare at a bright light just after you've torn out the hairs.
It's the gift that just keeps giving!

(Not recommended if you dislike sneezing/suspect you may follow through)
( Sea Tramp the thinking woman's 8 Ace, Fri 15 Feb 2008, 15:56, 4 replies, latest was 16 years ago)

Staring at a light might not work
Because photo-reactive sneezing is a genetic trait. I had a big argument with an ex about it once because she said I was lying when I said bright lights made me sneeze.

Being the better person, I waited until we had split up to look it up in medical journals and feel smug that I was right.
(Fat Bear is adjusting your breasts on, Sat 16 Feb 2008, 19:56, Reply)

.
also not recommended if you have cracked ribs. (see cracked ribs tip!)
(Miggyman, Mon 18 Feb 2008, 14:02, Reply)

Thank you
I thought I was the only one to have that bright light thing. Everyone I've ever told about it thought I was joking?
(BubaGuru, Thu 6 Mar 2008, 15:34, Reply)

Me too....
it's called the photic sneeze reflex
en.wikipedia.org/wiki/Photic_sneeze_reflex

Bright light alone is enough to make me sneeze.
(Wallilay has been bored of this shit since, Tue 18 Nov 2008, 11:44, Reply)