Refers to when a someone, particularly middle-aged men named Kenn, is too dumb or lazy to do a home improvement project the right way and instead takes the easy way out by doing a shoddy, make-shift job that's bound to fail when least expected. For example, taping down kitchen tile with cheap double-sided tape (instead of mortar), removing or cutting a structural beam in a house for more head room, or covering an exterior electrical wire with plumbing tape to protect it from the rain.
Ex. 1 Using masking tape to hold down the roof shingles? What the hell?! You are really Kenning it today.
Ex. 2 Will you quit Kenning it already? I'm tired of having to re-do every project you touch.