When the vibration of a bus you're riding gives you a boner.
I was afraid to get off the bus at my stop because the ride gave me a bus-on.
by rueluv February 19, 2007
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A double-decker bus, usually used in England or in large cities. Better than a bus because it is not as cramped and because riding in the top is more fun.
"There sure are a lot of people at this bus stop. If this isn't a bus-bus, we might not get on!"
by UVicStudent December 30, 2009
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Bu-bu-but is the stuttering when a blowhard, typically spouting political opinions, has his argument totally shut down, and he makes one last confused attempt with his same tired stock line.
Jesus: Ok, so here is what I want you to do. Love others just as I have loved you. Take care of them and don't judge them.

Disciple: Bu-bu-but what if they are gay.

Jesus: Did I stutter?
by sanjuro_kurosawa July 21, 2014
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If you’re on the bus, that means you have MAD cake. You are EXTREMELY Thiccc

The highest compliment one can possibly receive
Am I on the bus? No, but you have canoe or train potential.

Grace, Kelly, and Delaney, you are ON THE BUS. You guys are bus drivers.
You are on the bus in those joggers!
by Kel-GG-Del August 29, 2019
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Young, sexy people that live in Malibu call it The 'Bu, because when you say the entire word, it takes time, and then you wouldn't be young anymore.
I live in the Bu.

The Bu cracks my shit up.
by Cinely January 02, 2009
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an erection/hard on caused by the vibrations of bus travel
'i've got a bus on'
by douglas1 October 29, 2009
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