1 definition by Matchstick8883

When a girl misses taking her birth control for a day and will get pregnant at the mere whiff of sperm.
I think I forgot to take my pill today" "Woah that makes you superpregnable for the next day!" "Don't smell Dillon or you will get pregnant!
by Matchstick8883 January 30, 2011
Get the Superpregnable mug.