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But the phrase is not exclusive to Trainspotting. It comes from the Bible (Deuteronomy 30:19), and the design in the pictures you posted looks like the T-shirt popularized by the Wham! video for Wake Me Up Before You Go-Go in 1984 (you can see it from the very start): ...
The phrase was common on T-Shirts in the 80's, I understood it at the time (and now) to be used to encourage young women to not have abortions.
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