this has worked for me every time!
LO has been fussy and wanting to poop/fart but has a tough time letting it out. His face would turn red and he looks like he's in pain.
My solution was to help him into a squat position. First, I turn him around, so his back is facing me. He'll be leaning against me, with his head resting on my chest. I hold his legs up by the back of his knees and a few seconds later, phfffft, the loudest fart/poops ever. I've been 6 for 6 so far.
*disclaimer, though this works for me, I cannot guarantee it will work for you! not every baby is the same!

Re: my way of relieving a gassy baby
Aug.13 May Siggy Challenge: Moms
thanks catskitch! I owe you one!
Baby C - 08.23.13