Top Definition
The act of typing into a mobile communications device while seated in a toilet stall.
I spent like two minutes today after lunch toilet thumbing Sue from HR, I sure hope she understood what I needed. - My toilet thumb must have got blocked due to the basements thick walls. - I know I haven't been able to all day but I will try to toilet thumb you on my next break.
by Phast January 08, 2009

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