To not do something previously agreed to. (usually at the last minute)
Can be shorted to 'gas out'.
Or to reject an idea/suggestion.
Person A: "hey man, ready to go?, it's gonna be awesome!"
Person B: "...errrrm... actually i think i'm gonna gas it out.
Person A: "You're an idiot."
"I was going to see my bird
last night but i thought i'd gas out and have a pot noodle and a wank
Those feelings of joy and happiness that arrive as a result of experiencing or having something. The source of bilbilaks varies from individual to individual and can be almost anything such as an object, a person, an activity, a sight, a taste, a piece of music, or a place.
Bilbilaks are welcome at any time, but especially useful in lifting the spirit during times of pain and hardship.
"Don't worry about me, I will be fine. I will make sure I find myself some bilbilaks!"
"I love taking photos, it brings me bilbilaks."
"I will bring my bilbilaks with me tomorrow!"