One funny thing happened to me.

After few minutes riding my bicycle I notice something moving on my back on my jacket at the neck level. I tell to myself it must be nothing, the wind or something else maybe.
But after 20 minutes riding this thing bothering me I stop and take off my jacket.
I then notice the little panties of my girlfriend sticked to the velcro of my jacket where we hide the hood.

So I went 20 minutes with the little panties of my girlfriend boucing with the wind on my back