↑
I awoke with a start, when ahead the bus forged
Down the street when I noticed, aghast,
That my member, with blood, was now fully engorged,
And a raging hard-on had amassed.
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Try as I might to diminish the tent
In my trousers with unsexy thoughts,
The recalcitrant ‘rection refused to relent,
And the bus had gone well past my stop.
↑
Sighing surrender, I leered at my lap,
“It appears that you’ve won this round, mate.”
Defeated, I drifted back into my nap,
Distant throbbings began to abate.
↑
When again I awoke to my bus seat, ensconced,
Though my lap-dragon lay in remission,
Other patrons had moved far away in response
To the diesel, nocturnal emissions.
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Buttercup's House 
That’s Marvelous
This is hilarious, and well-written! At first glance I thought the title said bones on buses, so when I read about the bus “forging” and the word blood in the first stanza, I thought briefly that it was going to be about a brutal car accident. Imagine my surprise :)
The last line, btw, is genius.
Genius? Wow. Quite a complement. Thanks, Jessica!