This thread amused me, not because the needles broke but because I found a couple of kindred spirits in the use of the tum when knitting!
I have the weirdest knitting technique (according to other knitters) whereby I balance the right hand needle in an upright position on my tum, I think it's because I'd only used longer needles that tuck under my elbows leaving my hands mostly free for knitting. I found the dpns (7") so short and I'm not used to holding needles with my hands! This was my answer, although later in the evening when I've changed for bed I do find that the pointed end of the dpns needle goes straight through my jersey knitted pj's and I keep stabbing myself in the belly!!