Keyword Analysis & Research: what does ttfn mean in text

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what does ttfn mean in text	0.61	0.6	7024	73	27
what	1.1	0.7	5670	34	4
does	0.04	0.1	9563	24	4
ttfn	0.57	0.6	2067	39	4
mean	1.89	0.2	3616	59	4
in	1.65	0.8	7000	22	2
text	0.07	0.5	1746	98	4

Keyword	CPC	PCC	Volume	Score
what does ttfn mean in text	1.8	0.8	7186	48