osiotp Share definition Flag Oh Shit im out of toilet paper... commonly used when your taking a shit and realize you dont have toilet paper.. Son: OSIOTPMom: what honey?Son: Get me a roll of toilet paper im out.Mom: OK ill be right there. osiotp by OSIOTP October 22, 2010 0 0 Get merch Get the osiotp mug. Buy Now — $32.95 See more merch