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1.
T-Bombing is slang for Text messaging to or from a cellular phone.
"I've just got my new cell phone, and I've been T-Bombing all my friends."
by Schmurb May 13, 2010
 
2.
Short for thread-bombing. When one or more people respond/comment on your thread on social websites with unnecessary comments so they feel like they can be involved in the discussion. T-bombing usually involves people you don't know very well nor like very much, but they are trying to get you to like/listen to them.
Why does Karen's mom always feel the need to T-bomb my threads about recipes.

Sally sister needs to stop t-bombing me or I'm going to delete her
by starr5933 January 19, 2012