to explain in a text message
Frank (text): what were they doin when u walkd in?
Lloyd (text): I can't textplain it..u just have to see it
explaining something to someone in detail via text message
Tracy: Dude, how did you end up naked on the beach last night?
Adam: I would tell you now but it's just way too long, I don't feel like textplaining it
When somebody tells you something interesting through an instant messaging system or text message and you need them to explain what happened but don't feel like calling them (probably because you're lazy).
Jennifer: "ZOMG Becky! Guess what? Jason and Anne had sex and now Anne is pregnant!"
Patty: "Well.. I'm not Becky but Textplain what happened! I thought they hated each other!"
When something is too hard to explain over text messages and is better to be told in person.
Frank: "Dude, my mom just called the cops on me."
Brett: "Wow, why?"
Frank: "Too hard to textplain, I'll tell you at school."
To explain via text message.
Jon, "tell me what happened last night!"
Taylor, "it's too long to textplain"
Jon, "I demand a textplanation!"
to explain something through a text
I can't be arsed to textplain it to you.