(This incorporates a regional/cultural definition of the verb "poke." The word in this context means, "To get someone's attention, either playfully or not, in order to communicate with them. Actual physical poking, as with a finger into one's side, is irrelevant, but certainly possible." This definition provided as an alternative to UrbanDictionary.com's current definitions for the word "poke," most of which are vulgar in nature.)
IM_Friend_One: come eat pho with us
IM_Friend_Two: I think I have to, now.