i had this problem of being too short for a long time. and one year at my local fair when i was younger, i didn't believe the guy and tried to measure myself. not knowing i was raising my hand slightly higher than my height, i thought i proved the guy wrong. he didn't argue with then 10 year old me and let me go on the ride anyway.
and i had a blast!
(that was the only timei ever did that and succeeded)