Top Definition
When you try to inhale any type of smoke properly and fail resulting in a coughing fit.
Guy1: Wow she's coughing at lot, is she ok?
Guy2: She's fine, she just McGlynned her fag

or

Guy1: Can i have a toke of that?
Guy2: Only if you don't McGlynn it, there isn't much left

or

Guy1: Can i scrape a fag?
Guy2: Nah, you're always wasting them by Mcglynning it!
by DI Girl November 18, 2010

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When someone inhales smoke incorrectly (be it tobacco or something else), and subsequently chokes.
Boy 1: *smokes + coughs*
Boy 2: dude you just mcglynned it!

or

Boy 1: why is that guy coughing?
Boy 2: because he just failed to smoke so he's mcglynning it
by ibpro November 18, 2010

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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