Am not responsible for my arousal...

Yesterday was behind man in old truck, clear windows. Though man appeared scrawny and mostly unappealing to my preferences, he lifted arm from back of bench seat to prop head. View of his biceps, bend of arm in t-shirt, created personal clenching sensations unlike previously experienced outside of bedroom. Am not one to swoon for muscles. Mia flummoxed.

Ah. No. Another instance a year ago. (?) Huge black truck, black hubs, black wheels, blacked windows, black cattle herder (decorative black grill over truck grill). Music hit bass notes. Rolled up silently on driver's side. Have no idea why truck created instant feminine moisture. Again, baffling.

Miniature spontaneous orgasms each time. Do not understand randomness of reaction. Am not particularly fond of trucks.

Note to self: "Mia, consider counselling for possible truck fetish or have more sex to counter effects of random arousal."