First, if you are not a native English speaker, be careful how you use this phrase-- it is considered crude or vulgar slang. The Urban Dictionary says it has two meanings. One refers to a small amount of ejaculate (cum) on the tip of the penis. The other is a slang expression for what the penis does at the climax of sexual intercourse. It is not a common expression, but you might hear it used by young men jokingly.
to sneeze
n lacks oxygen when you sneeze
It means whatever made you sneeze was cleared from your nose.
Your heart stops when you sneeze, so mabie your nerves were interrupted.
He prefers you to sneeze on it
you smell
It depends which Dick you mean. If you mean Dick Turpin, it was Tom King. If you mean Dick Dastardley, it is Muttley. If you mean Dick Tracy, it was first Pat Patton and then Sam Catchem.
something you sneeze into when your sick
( btw i mean sneeze tissue!)
It means the first four sneezes were unable to dislodge the irritant in your nasal passages that were causing the sneeze.
that you sneezed four times
Fneosan is and Old English word for 'sneeze'.