You'd need to be 4 meters tall to be caught in that one :o)
Snails are ok, but slugs? Yuck! Recently I've seen couple leopard slugs which are twice as big. They also leave a trail that is really hard to get rid of and remains slimy for a long time (hmm... I could see an application for that).
The leopard ones are so damn pretty!
And they dont crunch when you step on them... a terrifying sound after the rain..
I manage to catch all the regular height ones :p