[two to one] See: [TEN TO ONE].

[two ways about it] See: [NO TWO WAYS ABOUT IT].

[two's company; three's a crowd] An informal way to express a […]

[two-faced] {adj.} Insincere; disloyal; deceitful. * /Don't confide too much in […]

[two-time] {v.}, {slang} To go out with a second boy or […]

[TY] "Thank you"

[u] "You"

[U.F.O.] {n. phr.} Unidentified Flying Object. * /Some people think that […]

[UA] User agreement

[UFIA] "Unsolicited finger in the anus"