I am continually surprised when I see a load of nitrous oxide* capsules in the gutter. Fancy buying boxes of them, then decanting into balloons and breathing it in.
Ron here had a try of it.Pretty soon he was riding round in circles and giggling. Then having got properly dizzy he fell off and the bike carried on going round and round.
Earlier he had been practicing some downhill jumps (see extra). Far more sensible.
*I think thats what it is.